Question

Find the curved surface area of a right circular cone whose slant height is $10cm$ and base radius is $7cm$.

Answer 1

In cone,

Slant height $\left(l\right)=10cm$

Radius of the base $\left(r\right)=7cm$

Curved surface area of the cone $=\pi rl$

$=\frac{22}{7}\times 7cm\times 10cm$

$=220c{m}^2$