Question

The volume of a right circular cylinder can be obtained from its curved surface area by multiplying it by its

• A. 2/radius
• B. 2 x height
• C. radius/2
• D. height

Answer 1

Answer: (C)

radius/2

For cylinder C.S.A x a=volume
$\Rightarrow \left(2\pi rh\right)\left(a\right)=\pi r^{2}h$
$\Rightarrow a=r/2$