Question

Sample 10 Aretangular paper of width 14 cm is rolled along its width and a cylinde
of madius 21 cm is formed. Find the volume of the cylinder (Fig 11 45). (Take
forte
7​

Answer 1

Answer:

A rectangular paper of width 14 c is rolled along its width to form a cylinder.

Height of cylinder = h= 14 cm= width of rectangular paper.

And

Radius of cylinder = r= 20 cm.

Volume of the cylinder = πr

2

h

=

7

22

×20×20×14

=17600cm

3

∴ Volume of the cylinder = 17600cm

2