According to the information, the curved surface area of the cylinder is 1750.34 cm^2 and its volume is 11683.49 cm^3.
How to find the curved surface area and volumen of a cylinder?a. To find the curved surface area and volume of a cylinder, we use the formulas:
Curved surface area = 2πrh
Volume = πr^2h
Given, circumference of the base = 82.37 cm
Circumference of a circle = 2πr
Therefore, 2πr = 82.37
r = 82.37 / (2π) = 13.12 cm
Height, h = 21.20 cm
Curved surface area = 2πrh
= 2π x 13.12 x 21.20
= 1750.34 cm^2
Volume = πr^2h
= π x 13.12^2 x 21.20
= 11683.49 cm^3
Therefore, the curved surface area of the cylinder is 1750.34 cm^2 and its volume is 11683.49 cm^3.
b. Table for multiplication in modulo base 7 on the set X = {3, 5, 7}:
X 3 5 7
3 2 1 6
5 1 4 6
7 0 0 0
To fill in the table, we multiply each element in X with every other element in X, and take the result modulo 7. For example, 3 x 3 = 9, and 9 modulo 7 is 2, so we fill in 2 in the first row and first column. Similarly, 3 x 5 = 15, and 15 modulo 7 is 1, so we fill in 1 in the first row and second column, and so on.
Learn more about cylinders in: https://brainly.com/question/16134180
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