Question

The volume of a right circular cylinder is $1100c{m}^3$ and the radius of its base is $5cm$. find its curved surface area.

Answer 1

Given: Volume of right circular cylinder $=1100c{m}^3$

Radius of base, $r=5cm$

Volume of right circular cylinder is given by $\pi r^{2}h$

$\Rightarrow \pi r^{2}h=1100$

$\Rightarrow h=\frac{1100}{\pi (5{)}^2}$

$\Rightarrow h=\frac{44}{\pi }$

Curved surface area of the cylinder, $CSA=2\pi rh$

$=2\pi \times 5\times \frac{44}{\pi }=440c{m}^3$