Question

The radius of a cone is 7 cm and area of curved surface is 176 `cm^2`. Find the slant height.  

Answer 1

Given
Radius of a cone (r)=7cm. 

Let 'l ' be the slant height of a cone 

∴ Curved surface area = `pirl` 

⇒ `176=pixx7xxl` 

⇒` l= 176/(7pi)=(176xx7)/(7xx22)=8cm`