Question

A rectangular paper of width 7cm is follded along it's width and a cylinder of radius 10cm is formed. FIND L. S. A of cylinder

Answer 1

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


Height of cylinder =  h  =  7 cm = width of the rectangular paper


And

Radius of cylinder ( Given ) =  r  = 10 cm


And

we know Volume of cylinder  = π r^2 h , So


Volume of our given cylinder = 22/7 x 10 x 10 x 7  = 2200 cm^3