Question

In a cone l = 10 cm, r = 5 cm then find the CSA of a cone.​

Answer 1

Given,

Length (l) = 10 cm
Radius (r) = 5 cm

To find,

CSA of a cone = ?

So,

CSA of a cone = pie × l × r
= 22/7 × 10 × 5
= 1100/7
= 157.142 cm^2