Question

a rectangular paper of width 14 cm is rolled along its widht and a cylinder of radius 20 Cm is formed. Find the volume of cylinder.

Answer 1

Given  : A rectangular paper of width 14 cm is rolled along its width to form a cylinder .  So

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

And
Radius of cylinder ( Given ) =  r  = 20 cm

And
we know Volume of cylinder  = π r2 h , So

Volume of our given cylinder = 227× 20 × 20× 14 = 22× 20 × 20× 2 = 17600  cm3              ( Ans )

Answer 2

: A rectangular paper of width 14 cm is rolled along its width to form a cylinder . So

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

Radius of cylinder ( Given ) = r = 20 cm

we know Volume of cylinder = π r2 h , So

Volume of our given cylinder = 227× 20 × 20× 14 = 22× 20 × 20× 2 = 17600 cm3