Question

The height of a cylinder is $15cm$. Its curved surface area is $660c{m}^2$. Find its radius.

Answer 1

Given:

Height of cylinder $=15cm$

Curved surface area $=660{cm}^2$

We know Curved surface area $=2\pi rh$

$\therefore 2\pi rh=660$

$\Rightarrow r=\frac{660}{2\times \pi \times 15}cm=7.00cm$