Question

The radius of a cone is $7cm$ and its slant height is $10cm$. Calculate the curved surface area of the cone.

Answer 1

Given, radius $r=7cm$

and slant height $l=10cm$.

Then, curved surface area of cone $=\pi rl$
$=\frac{22}{7}\times 7\times 10$
$=220sq.cm$.

Hence, the required curved surface area of cone $=220sq.cm$.