Question

A rectangular sheet of paper 44 cm x 18 cm is rolled along its length and a cylinder is formed. Find the volume of the cylinder.

(Use π = `22/7`).

Answer 1

Given:

Length of rectangular sheet = 44 cm

Breadth of rectangular sheet = 18 cm

The sheet is rolled along its length, so

Circumference of the base of the cylinder = 44 cm

Height of the cylinder = 18 cm

2πr = 44

Using π =`22/7`

`2 xx 22/7 xx r = 44`

r = 7 cm

Volume of the cylinder:

V = πr2h

= `22/7 xx 7^2 xx 18`

= `22/7 xx 49 xx 18`

= 2772 cm³