Question

Find the CSA of a right circular cylinder whose height and radius of base are $30$cm and $3.5$cm respectively.

Answer 1

CSA of cylinder$=2\pi rh=2\times \frac{22}{7}\times 3.5cm\times 30cm=660c{m}^2$
$\therefore$ CSA of the cylinder $=660c{m}^2$.