Question

The CSA of a right circular cylinder of height $14$cm is $88c{m}^2$. Find the radius of the base of the cylinder.

Answer 1

CSA of a cylinder$=2\pi rh\Rightarrow 88c{m}^2=2\times \frac{22}{7}\times r\times 14$
$r=\frac{88c{m}^2\times 7}{2\times 22\times 14cm}=1$cm.
$\therefore$ Radius of the base of the cylinder $=1$cm.