Question

Curved surface area of a cone is $308$ ${\text{cm}}^2$ and its slant height is $14$ cm find, radius of the base.

Answer 1

if curved surface area of a cone $\pi rl=308c{m}^2$
height $h=l=14cm$
Then (i) $r=?$
CSA of a cone $=\pi rl$
$308=\frac{22}{7}\times r\times 14$
$308=44\times r$
$\therefore r=\frac{308}{44}$
$\therefore r=7cm$