Question

A rectangular paper of width 21 cm is rolled along it's width and a cylinder of radius 40 cm is formed . Find the volume of the cylinder ( Take π = 22/7 )


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Answer 1

Answer:

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

Answer:

ohk

Width of rectangular paper is 21 first will take out slant height

I think this is the answer, but plz check before doing it