Question

The area of the curved surface of a cone is 60 $\pi c{m}^2$.If the slant height of the cone be 8 cm,find the radius of the base.

Answer 1

$Curvedsurfaceareaofacone=60\pi c{m}^{2}Slantheight\left(l\right)=8cm\therefore Radius\left(r\right)=\frac{Area}{\pi l}=\frac{60\pi }{\pi \times 8}=7.5cm$