Therefore , the solution of the given problem of angles comes out to be A is larger than B in terms of size and scale variables can be used with this technique.
An angle meaning is what?A tilt is a form in Euclidean geometry made up of two sides, but rather cylindrical faces, that divide at the barrier's centre and apex. At their junctions, two rays may combine to form an angle. Angle is another outcome of two entities interacting. Dihedral shapes best describe them. A two-dimensional curve can be created by arranging two line beams in various configurations at their ends.
Here,
Consider Polygon A to be a square with the dimensions 2 feet by 5 feet.
=> Size = 2 feet
=>Size = 51 t
The dimension of A can be multiplied by the same scale factor to obtain potential scaled duplicates.
Consider for instance, the scale factor k is:
A scaled-down version of rectangle A is 6 feet by 15 feet, for example.
You obtain this by:
=> Length: 2 feet, 3 inches. 5 feet 15 feet wide
Area A consists of:
=> Area = 2 feet × 5 feet 2
B's size is 90 feet²
=> 2 Arca = 15 feet²
Comparison
A is larger than B in terms of size.
Scale variables can be used with this technique.
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Triangle with the coordinates A (-5,-1), B (-4,4), C (-1,-1)
I will mark you brainiest!
Using the diagram below, which of the following angle pairs represent vertical angles?
A) ∠KDJ ≅ ∠FBG
B) ∠LAC ≅ ∠GBC
C) ∠DCE ≅ ∠BCA
D) ∠DCE ≅ ∠BCE
The following angle pairs represent vertical angles (C) ∠DCE ≅ ∠BCA.
What is Vertically Oppοsite Angle?Vertical angles are a pair οf nοn-adjacent angles fοrmed by the intersectiοn οf twο lines. Vertical οppοsite angles are a type οf vertical angles that are acrοss frοm each οther and have the same measure. In οther wοrds, if twο lines intersect at a pοint, then the angles that are οppοsite each οther (i.e., οne οn the left and οne οn the right οf the intersectiοn) are called vertical οppοsite angles, and they are cοngruent.
Vertical angles are fοrmed by the intersectiοn οf twο lines. They are cοngruent, which means they have the same measure.
Lοοking at the diagram, we see that angles ∠KDJ and ∠FBG are nοt fοrmed by the intersectiοn οf twο lines. They are bοth interiοr angles οf the quadrilateral KDFB. Therefοre, they are nοt vertical angles.
∠LAC and ∠GBC are nοt fοrmed by the intersectiοn οf twο lines. They are bοth interiοr angles οf the quadrilateral KDFB. Therefοre, they are nοt vertical angles.
Angles ∠DCE and ∠BCA are fοrmed by the intersectiοn οf twο lines, and they are οn οppοsite sides οf the transversal AC. Therefοre, they are vertical angles, and chοice (C) is the cοrrect answer.
Angles ∠DCE and ∠BCE share a cοmmοn ray, CE, but they are nοt fοrmed by the intersectiοn οf twο lines. Therefοre, they are nοt vertical angles.
Sο the cοrrect answer is (C) ∠DCE ≅ ∠BCA.
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Which chart has an equation of y = 2.75x?
Answer:
None of it.
Step-by-step explanation:
Notice the slope is 2.75 this means for EVERY X the graph goes up by 2.75 in the Y axis. For example.
If at X=1 y=0
Then for X=2 y=2.75
and for X=3 y=2.75+2.75=5.5
also the graph must pass thought point (0,0), the origin, and none of the graph follow this.
You can also compare the slopes of each equations
for graph A, from x=1 to x=2 the height Y goes from 3 to 3.5, this is a slope of 0.5 (not the 2.75 we are looking for)
for graph A, from x=1 to x=2 the height Y goes from 1 to 2.5, this is a slope of 1.5 (not the 2.75 we are looking for)
for graph A, from x=1 to x=2 the height Y goes from 1 to 2.75 this is a slope of 1.75 (not the 2.75 we are looking for)
notice the last is similar to equation y=1.75X+b, just in case.
Answer:
none
Step-by-step explanation:
A certain forest covers an area of 2100 km sq. Suppose that each year this area decreases by 4%. What will the area be after 10 years?
round your answer to the nearest square kilometer.
The area of the forest will be approximately 1396 km sq. after 10 years.
What will the area be after 10 years?Given that, a forest covers an area of 2100 km sq and that each year this area decreases by 4%..
Initial value = 2100rate = 4%Elapsed time = 10 yearsIf the area of the forest decreases by 4% each year, then after one year it will be 96% of the original size.
After two years, it will be 96% of 96% of the original size, or 0.96² of the original size.
After ten years, it will be 96% of itself ten times, or 0.96¹⁰ of the original size.
So the area of the forest after 10 years will be:
Area = Initial area × 0.96¹⁰
Area = 2100 km sq × 0.96¹⁰
Area = 1396 km sq
Therefore, the area of the forest cover in 10 years will be 1396 km sq.
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1. Find the m
2. Determine the length of side AB.
3. What are the sine and cosine ratios for angles A and B?
sin
cos
sin
cos
4. What do you notice about the sine of angle A and cosine angle B?
5. What do you notice about the cosine of angle A and the sine of angle B?
6. Add up angles A and B. What do they equal?
7. Given the information you obtained in numbers 1-5, determine the missing angles in A-D below.
a. sin40 degrees=cos___
b. cos27 degrees= sin___
c. sin90 degrees = cos___
d. cos65 degrees = sin___
The length of the side AB in the triangle is AB = 13.9 inches
What is Pythagoras Rule?You should be aware that the Pythagoras' Theorem states that the square of the hypotenuse is equal to the sum of the squares of the other two sides.
The given sides are
AC = 8.5 inches
BC = 11 inches
AB = x
Using the Pythagoras rule we have
x² = 11² + 8.5²
x² = 121 + 72.25
x² = 193.25
x = √193.25
x = 13.9 inches
Therefore AB = 13.9 inches
3 The sine and cosine ratios for angles A and B are
Sine A = opposite/Hypotenuse
Sin A = 11/13.9
Sine A = 0..7914
A = Sin⁻¹0.7914
The ratio cos B = Adjacent /Hypo
Cos B = 8.5/13.9
Cos B = 0.6115
B = Cos⁻¹0.6115
4 The relationship between sine of angle A and cosine angle B is that
Sin A + Cos B = 1 approximately
The sum of angles A and B. are 1
7 a sin40 = cos 50
b cos27 = sin63
c sin 90 = cos0
d cos 65 = sin 25
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given the line 4x+5y-9=0 find the gradient , intercept y and intercept x and sketch line
According to given conditions, Gradient = -4/5, y-intercept = 9/5, x-intercept = 9/4.
What is co-ordinate geometry ?
Coordinate geometry is a branch of mathematics that deals with the study of geometric shapes using a coordinate system. In this system, points are identified by their positions in relation to two or more perpendicular lines called axes.
To find the gradient and intercepts of the line 4x+5y-9=0, we need to rearrange the equation into the slope-intercept form y=mx+b, where m is the slope and b is the y-intercept.
First, we can solve for y:
4x + 5y - 9 = 0
5y = -4x + 9
y = (-4/5)x + 9/5
Now we can see that the slope (m) of the line is -4/5 and the y-intercept (b) is 9/5. To find the x-intercept, we can set y=0 and solve for x:
(-4/5)x + 9/5 = 0
-4x + 9 = 0
x = 9/4
So the x-intercept is (9/4, 0).
To sketch the line, we can plot the y-intercept at (0, 9/5), the x-intercept at (9/4, 0), and draw a straight line passing through both points:
Therefore, according to given conditions, Gradient = -4/5, y-intercept = 9/5, x-intercept = 9/4.
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Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. shaded area is 0.1949
The indicated z-score is 0.84.
What is the standard normal distribution?The standard normal distribution, also known as the Gaussian distribution or the bell curve, is a probability distribution that describes a set of data points that are normally distributed around the mean with a known variance. It is characterized by its mean, which is 0, and its standard deviation, which is 1. The shape of the distribution is symmetric and bell-shaped, with the highest probability density occurring at the mean.
From the given information, we know that the shaded area under the curve is 0.1949. This area corresponds to the probability that a random variable from a standard normal distribution falls between the mean and some unknown value, which we'll call "z".
Looking up the standard normal distribution table or using a calculator, we find that the z-score corresponding to an area of 0.1949 is approximately 0.84.
Therefore, the indicated z-score is 0.84.
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5.937÷10 to the 3rd=
Answer:
Step-by-step explanation:
(5.937/10)^3=0.20926719195
or
5.937/(10^3)=0.005937
I need help asap!!
Only 4% on babies are born on their due data.
Answer:
14
Step-by-step explanation:
yes
Ben is an activity leader.
He is planning a team-building event for a group of people.
Ben has this part of a map.
Key: 1 cm on the map is 1000 m on the ground
The group will start at point A and walk directly to point B.
Ben needs to write instructions to give to the group.
The instructions need to include the
. bearing
. distance to be walked.
(a) Write the instructions for the group.
Remember to give units with your answer.
Diagram drawn
accurately
According to Cavalieri’s Principle, which pair of shapes would have equal volumes?
a)a cylinder and a sphere with the same radius
b)a cone and a cylinder with equal base areas and heights
c)a cylinder and a right rectangular prism with equal heights
d) a cone and a pyramid with equal base areas and heights
A cone and a cylinder with equal base areas and heights.
What is volume?
A volume is simply defined as the amount of space occupied by any three-dimensional solid. These solids can be a cube, a cuboid, a cone, a cylinder, or a sphere. Different shapes have different volumes.
b) a cone and a cylinder with equal base areas and heights. According to Cavalieri's principle, if two solid figures have the same height and the same cross-sectional area at every level, then they have the same volume. In this case, the cross-sectional area of a cone and a cylinder with equal base areas and heights will be the same at every level, so their volumes will also be the same.
Therefore, a cone and a cylinder with equal base areas and heights.
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18 people entered the race 2 people didn’t finish what is the ratio of those who finished the race to those that entered
The ratio of those who finished the race to those that entered will be 8:9.
What is ratio?
For evaluating the relationship between two numbers or quantities, we employ the ratio formula. The general manner of representing a ratio of between two quantities say 'a' and 'b' is a: b, which is interpreted as 'a is to b'.
A ratio describes how much of one quantity is necessary in relation to another. It is possible to combine and express the two terms in the ratio in their simplest form.
Given : total people entered = 18
people didn't finish = 2
So, people who finished = total people entered - people didn't finish
= 18 - 2
= 16
Hence, Ratio required = people who finished race / people who entered
= 16 / 18
= 8/9
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Give a graph of a function that will satisfy all of the following properties.
f''(x) > 0 on (-infinity, -2)
f''(-2) = f'(-1) =f'(1) = f''(2) = 0 = f'(3)=0
f''(x) > 0 on (4, infinity)
Note that you have a lot of freedom with this. You can come up with many different graphs that will satisfy these properties.
The functiοn has a pοint οf inflectiοn at x=0, which implies that f''(0) = 0.
What is graph οf a functiοn?A graph οf a functiοn is a visual representatiοn οf hοw the οutput οf a mathematical functiοn changes as its input varies. It typically cοnsists οf a set οf pοints plοtted οn a cοοrdinate plane.
| /\
| / \
| / \
| / \
f(x) | _ /________\__/\____
-2 -1 0 1 2 3 4
The functiοn has a lοcal minimum at x=-2 and a lοcal maximum at x=2, which implies that f''(x) > 0 οn (-infinity, -2) and (4, infinity).
The functiοn has hοrizοntal tangents at x=-1, 1, and 3, which implies that f'(-1) = f'(1) = f'(3) = 0.
The functiοn has a pοint οf inflectiοn at x=0, which implies that f''(0) = 0.
The functiοn passes thrοugh the οrigin, but this is nοt a necessary cοnditiοn tο satisfy the given prοperties. There are many οther pοssible functiοns that wοuld satisfy the given cοnditiοns.
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hailey invested $940 with an interest rate of 8.25 % that is compounded quarterly and Justin invested $940 with an interest rate of 7.625% that is compounded monthly
To the nearest dollar, how much money would Hailey have in her account when Justin's money has tripled in value?
To solve this problem, we need to first determine how long it will take for Justin's money to triple in value. We can use the formula for compound interest:
A = P(1 + r/n)^(nt)
where:
A = the final amount
P = the principal (initial amount)
r = the annual interest rate (as a decimal)
n = the number of times the interest is compounded per year
t = the number of years
For Justin, we have:
P = $940
r = 0.07625
n = 12 (monthly compounding)
t = unknown
We want to solve for t when A = 3P = $2820. We can rearrange the formula and plug in the values:
A = P(1 + r/n)^(nt)
3P = P(1 + r/n)^(nt)
3 = (1 + 0.07625/12)^(12t)
ln(3) = 12t * ln(1 + 0.07625/12)
t = ln(3) / (12 * ln(1 + 0.07625/12))
t ≈ 15.8 years
So it will take Justin about 15.8 years for his money to triple in value.
Now we can use the same formula to find how much money Hailey will have in her account after 15.8 years:
P = $940
r = 0.0825
n = 4 (quarterly compounding)
t = 15.8
A = P(1 + r/n)^(nt)
A = $940(1 + 0.0825/4)^(4*15.8)
A ≈ $3501
Therefore, Hailey will have about $3,501 in her account when Justin's money has tripled in value
I actually have no idea what to do here
The probability that a person who walked also sailed is 1/8.
Describe Probability?Probability is used to make predictions about the likelihood of future events, based on past observations or available information. It is widely used in fields such as statistics, finance, engineering, and science to analyze and model uncertain systems and processes.
Out of the 50 people, 3 did not participate in either walking or sailing. So, the number of people who participated in at least one activity is:
50 - 3 = 47
Out of these 47 people, 40 took part in walking and 18 took part in sailing. However, we need to subtract the number of people who participated in both activities because we don't want to count them twice. Let's call this number "x":
x = number of people who participated in both walking and sailing
So, the number of people who participated in at least one of the activities is:
40 + 18 - x
We know that there were 50 people in total, so we can write:
40 + 18 - x + 3 = 50
Simplifying this equation, we get:
55 - x = 50
x = 5
So, 5 people participated in both walking and sailing.
Now, we want to find the probability that a person who walked also sailed. Since there were 40 people who walked and 5 of them also sailed, the probability is:
5/40 = 1/8
Therefore, the probability that a person who walked also sailed is 1/8.
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Find the length of the missing side.
Answer:
If leg a is the missing side, then transform the equation to the form where a is on one side and take a square root: a = √(c² - b²)
If leg b is unknown, then: b = √(c² - a²)
For hypotenuse c missing, the formula is: c = √(a² + b²)
Step-by-step explanation:
Answer:
[tex]\huge\boxed{\sf P= 9 \ in. }[/tex]
Step-by-step explanation:
Given is a right-angled triangle.
So, we can use Pythagorean Theorem to find the missing length.
It is:
[tex](Hypotenuse)^2=(Base)^2+(Perpendicular)^2[/tex]
Here,
Hypotenuse = 41 in.
Base = 40 in.
Perpendicular = P
So, the above equation becomes:[tex](41)^2=(40)^2+P^2\\\\1681 = 1600 + P^2\\\\Subtract \ 1600 \ from \ both \ sides\\\\1681-1600=P^2\\\\81 = P^2\\\\Take \ square \ root \ on \ both \ sides\\\\\sqrt{81} = \sqrt{P^2} \\\\P= 9 \ in. \\\\\rule[225]{225}{2}[/tex]
what is personal budgeting and why is it important
Personal budgeting is the process of creating a plan for managing your income and expenses to achieve your financial goals. It involves creating a realistic and practical plan and it is important because it help on how you will spend your money each month.
What is Personal budgeting ?Personal budgeting is important for several reasons. First and foremost, it helps you take control of your finances by giving you a clear understanding of your income and expenses, allowing you to identify areas where you can cut back or save more. This can help you avoid overspending and falling into debt, and can also help you save money for future goals such as buying a home, paying for education, or investing for retirement.
Additionally, personal budgeting can help you develop healthy financial habits and increase your financial literacy. By tracking your spending and setting financial goals, you can become more mindful of your money and make more informed decisions about how to allocate your resources. Over time, this can help you build wealth and achieve greater financial stability and security.
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SUPER EASYYY PLEASE ANSWER THIS
Answer:
The y-intercept represents a starting salary of $32,500.
The slope represents an additional $2,500 in salary for each additional year of employment.
If the starting salary for a new employee is changed to $35,000 and the yearly salary increase is unchanged, the new equation would be
[tex]y=2500x+35000[/tex].
If the yearly salary increase is changed to $3,000 and the starting salary remains the same, the new equation would be
[tex]y = 3000x + 32500[/tex].
Step-by-step explanation:
Answer:
The y-intercept represents a starting salary of $32,500.
The slope represents an additional $2,500 in salary for each additional year of employment.
If the starting salary for a new employee is changed to $35,000 and the yearly salary increase is unchanged, the new equation would be
y=2500x+35000y=2500x+35000 .
If the yearly salary increase is changed to $3,000 and the starting salary remains the same, the new equation would be
y = 3000x + 32500y=3000x+32500 .
The figure below is dilated by a factor of 4 centered at the origin. Plot the resulting image.
( please explain how to do it and what i have to plot)
Answer:
Step-by-step explanation:
Ok so basically, what I would do is make note of each of the points of the triangle, and them multiply them by four, or the scale factor.
15 ) Ian throws a ball up in the air and lets it fall to the ground.
The height of the ball, h(t), is modeled by the equation
h(t) = -16t² + 6t+ 3, with h(t) measured in feet, and time, t,
measured in seconds. The number 3 in h(t) represents
(1) the maximum height of the ball
(2) the height from which the ball is thrown
(3) the number of seconds it takes for the ball to reach the ground
(4) the number of seconds it takes for the ball to reach its maximum
height
The number 3 in the equation h(t) = -16t² + 6t+ 3 represents the initial height from which the ball is thrown.
The equation h(t) = -16t² + 6t+ 3 models the height of the ball thrown in the air, with h(t) measured in feet and time, t, measured in seconds. The number 3 in this equation refers to the height from which the ball is thrown. This is represented by the constant term 3, which is added to the equation after the sum of the variables. The formula h(t) = -16t² + 6t+ 3 can be broken down into three parts. The first part is the constant term, 3, which denotes the initial height of the ball. The second part is the linear term, 6t, which represents the acceleration of the ball due to gravity. Lastly, the quadratic term, -16t², is used to describe the rate at which the ball’s acceleration slows down due to air resistance. Therefore the number 3 in the equation h(t) = -16t² + 6t+ 3 represents the initial height from which the ball is thrown.
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8) For a given area of a triangle, the base varies inversely as its height. When the height is
10 in the base is 5 in. Find the base if the height is increased to 20 in.
Answer:
2.5
Step-by-step explanation:
If the areas stay the same, then 10*5=20*h
So, 20h=50
h=2.5
Lim. Sin(1/theta)
Theta-0
Answer:
the limit of sin(1/θ) as θ approaches 0 is equal to 0.
Step-by-step explanation:
To evaluate this limit:
lim θ→0 sin(1/θ)
we can use the squeeze theorem. First, we note that -1 ≤ sin(1/θ) ≤ 1 for all values of θ, since the sine function oscillates between -1 and 1.
Next, we consider the limit of two other functions, -1/|θ| and 1/|θ|, as θ approaches 0:
lim θ→0 -1/|θ| = -∞
lim θ→0 1/|θ| = ∞
Since sin(1/θ) is always between -1/|θ| and 1/|θ|, we can apply the squeeze theorem to conclude that:
lim θ→0 sin(1/θ) = 0
Therefore, the limit of sin(1/θ) as θ approaches 0 is equal to 0.
Rectangle abcs is the image of rectangle abcs after t abcs if a is (6,-8) a is (-2,4) and (4,-6)what are coordinates of b
In the rectangle , the cοοrdinate οf b is (0,2).
What is rectangle?A quadrilateral with fοur equal vertices and parallel sides is knοwn as a rectangle. Because οf this, it is alsο knοwn as an equiangular quadrilateral.
The term "parallelοgram" can alsο be used tο describe a rectangle because the οppοsing sides are equal and parallel.
Here In the given rectange abcd, Let cοοrdinates οf b be (x, y)
then, ac and bd are diagοnals οf the rectangle.
Coordinates of midpoints of ac and bd must be same.
Coordinates of midpoint of ac = [tex](\frac{6-2}{2},\frac{-8+4}{2})[/tex] = [tex](\frac{4}{2},\frac{-4}{2})[/tex] = (2,-2)
Coordinates of midpoint of bd = [tex](\frac{x+4}{2},\frac{y-6}{2}) = (2,-2)[/tex]
=> [tex]\frac{x+4}{2}=2 , \frac{y-6}{2}=-2[/tex]
=> x+4=4 , y-6=-4
=> x=4-4, y=-4+6
=> x=0,y=2
Hence the coordinate of b is (0,2).
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Maria Fay bought four Dunlop tires at a local Goodyear store. The salesperson told her that her mileage would increase by 6%. Before this purchase, Maria was getting 24 mpg. What should her mileage be with the new tires?
Note: Round to the nearest hundredth.
Let a=4,b=4 and angle C=120 degrees. Find the length of side c and measure of the angles, angles A and B(in degrees). Give your answer to at least 3 decimal places.
c=
Angle A=
Angle B=
Step-by-step explanation:
law of cosine
c² = a² + b² - 2ab×cos(C)
c is the side opposite of the C angle. a and b are the other 2 sides.
AB² = 4² + 4² = 16 + 16 = 32
AB = c = sqrt(32) = 5.656854249...
since a and b are equal (isoceles triangle), so must be the angles at A and B.
the sum of all angles in a triangle is always 180°.
180 = angle A + angle B + angle C
= angle A + angle B + 120
since angle A = angle B we get
180 = 2×angle A + 120
2×angle A = 60°
angle A = angle B = 30°.
Given a parallelogram ABCD, the measures of angle B = 3x + 36 and angle D = 6x - 6 : find m angle A
Answer: In a parallelogram, opposite angles are congruent. So we know that angle A is congruent to angle C. Let's call the measure of angle A "y".
Therefore, we have:
angle A = y
angle B = 3x + 36
angle C = y (because opposite angles in a parallelogram are congruent)
angle D = 6x - 6
The sum of the measures of the angles in a parallelogram is 360 degrees. So we can write an equation:
angle A + angle B + angle C + angle D = 360
Substituting in the values we know:
y + (3x + 36) + y + (6x - 6) = 360
Simplifying:
2y + 9x + 30 = 360
2y + 9x = 330
Now we have an equation with two variables. But we also know that angle A and angle C are congruent, so y = angle A = angle C. Substituting this into the equation above:
2(angle A) + 9x = 330
2(angle A) = 330 - 9x
angle A = (330 - 9x)/2
Therefore, the measure of angle A is (330 - 9x)/2.
Step-by-step explanation:
2 1/3 x 9 the product is approximately
Answer:
21
Step-by-step explanation:
2 1/3 ×9=7/3 × 9=21
please help. will mark brainliest
The value y is 35, Since HIJK is an isosceles trapezoid so its diagonal are equal.
What is quadrilateral?A quadrilateral in geometry is a four-sided polygon with four edges and four corners. The name is derived from the Roman words quadri, a variation of four, and latus, which means "side".
Isosceles trapezoid, it is a convex quadrilateral with one set of opposite sides divided by a line of symmetry in Euclidean geometry.
HIJK is an isosceles trapezoid.
So, HJ =IK ( Diagonals are equal in isosceles trapezoid)
5y - 1 = 4y + 34
5y - 4y = 34 + 1
y = 35.
So, the value of y is 35.
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i just need to know the answers to the picture
Answer:
6.
[tex]48\pi \: {ft}^{3} [/tex]
7.
[tex]81\pi \: {m}^{3} [/tex]
8.
[tex]112 \: {in}^{3} [/tex]
9.
[tex]14.52\pi \: {cm}^{3} [/tex]
10.
[tex]68.75\pi \: {yd}^{3} [/tex]
11.
[tex]32.269\pi \: {m}^{3} [/tex]
12. h ≈ 3,3 yd
13. h ≈ 5,5 m
14. V ≈ 77,0 in^3
15. V ≈ 69,1 in^3
16. V ≈ 8517,0 in^3
17. V ≈ 2628,1 cm^3
Step-by-step explanation:
6.
[tex]v = \pi {r}^{2} \times h[/tex]
[tex]v = \pi \times {4}^{2} \times 3 = 48\pi[/tex]
.
7.
[tex]v = {9}^{2} \times \pi \times 1 = 81\pi[/tex]
.
8.
[tex]v = {4}^{2} \times \pi \times 7 = 112\pi[/tex]
.
9.
[tex]v = ( {2.2})^{2} \times \pi \times 3 =14.52\pi[/tex]
.
10. r = 0,5 × d
r = 0,5 × 5 = 2,5 yd
[tex]v = ({2.5})^{2} \times \pi \times 11 = 68.75\pi[/tex]
.
11. r = 0,5 × 4,6 = 2,3 m
[tex]v = ({2.3})^{2} \times \pi \times 6.1 = 32.269\pi[/tex]
.
12. V = 41,5 yd^3
r = 2 yd
[tex]v = \pi \times {r}^{2} \times h[/tex]
[tex]41.5= \pi \times {2}^{2} \times h[/tex]
[tex]h = \frac{41.5}{4\pi} = \frac{83}{8\pi} ≈3.3[/tex]
.
13. d = 1,5 m
r = 0,5 × 1,5 = 0,75 m
V = 9,7 m^3
[tex]v = \pi {r}^{2} \times h[/tex]
[tex]9.7 = \pi \times ( {0.75})^{2} \times h[/tex]
[tex]h = \frac{9.7}{0.5625\pi} ≈5.5[/tex]
.
14. Given:
h = 8 in
d = 3,5 in
Find: V - ?
First, let's find the radius:
r = 0,5 × 3,5 = 1,75
[tex]v = \pi {r}^{2} \times h[/tex]
[tex]v = \pi \times( {1.75})^{2} \times 8 =24.5\pi≈77.0[/tex]
.
15 Given:
h = 5,5 in
d = 4 in
Find: V - ?
First, let's find the radius:
r = 0,5 × 4 = 2 in
[tex]v = \pi {r}^{2} \times h[/tex]
[tex]v = \pi \times {2}^{2} \times 5.5 = 22\pi≈69.1[/tex]
.
16. This figure contains 2 cilinders and one rectangular prism
First, let's find the volume of 2 cilinders (r = 0,5 × 25 = 12,5 in)
[tex]v(both \: cilinders) = (\pi \times ({12.5})^{2} \times 4 ) \times 2= 1250\pi[/tex]
[tex]v(prism) = 30 \times 17 \times 9 = 4590[/tex]
[tex]v(total) = 1250\pi + 4590≈8517.0[/tex]
.
17. This figure contains one rectangular prism and two semi-cilinders
First, let's find the volume of 2 semi-cilinders (it counts as one cilinder, since there's 2 identical halves, also r = 0,5 × 8 = 4):
[tex]v(cilinder) = \pi \times {4}^{2} \times 23 = 368\pi[/tex]
[tex]v(prism) = 23 \times 8 \times 8 = 1472[/tex]
[tex]v(total) = 368\pi + 1472≈2628.1[/tex]
how do i get the area
[tex]\textit{area of a segment of a circle}\\\\ A=\cfrac{r^2}{2}\left( \cfrac{\pi \theta }{180}-\sin(\theta ) \right) ~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=14\\ \theta =90 \end{cases}\implies A=\cfrac{(14)^2}{2}\left( \cfrac{\pi (90) }{180}-\sin(90^o) \right) \\\\\\ A=\cfrac{196}{2}\left( \cfrac{\pi }{2}-1 \right)\implies A=49\pi - 98~~ \approx ~~ 55.94~cm^2[/tex]