Android app on Google Play

Cone

The lateral surface of a right circular cone can be calculated in the following two ways, depending on the given information:

How to calculate the area of the lateral surface if the cone’s height and the base’s radius is given:

A=pi*r*sqrt{r^2+h^2}

A = area of the lateral surface

r = radius of the base

h = the cone's height

How to calculate the area of the lateral surface if the length of the lateral surface is given:

A=pi*r*a

A = area of the lateral surface

a = length of the lateral surface

r = radius of the base