Question

26)

Pardeep has a rectangular sheet of paper of size 44cm x 20cm. He rolled it
along its br eadth and a cylinder is formed. Find volume of the cylinder.​

Answer 1

Volume of cylinder = 3080 cm³

Explanation:

Let the length and breadth of the rectangle be L & B respectively.

Given the following data;

Length, L = 44cm

Breadth, B = 20cm

To find the volume of the cylinder;

First of all, we would determine the radius of the cylindrical base.

Circumference of circle = 2πr

44 = 2*22/7*r

308 = 44r

Radius, r = 308/44

Radius, r = 7cm

Next, we find the volume using the formula;

Note: the breadth of the rectangle is the height of the cylinder.

Volume of cylinder = πr²h

Volume of cylinder = 22/7*7²*20

Volume of cylinder = 22*7*20

Volume of cylinder = 3080 cm³