Cone lateral area calculator

Input value:
Unit:
Radius:
Height:
Lateral area of ​​cone:

Formula for the lateral area of ​​a cone:

Assume that the radius of the base of the cone is r, the height is h, and the generatrix length is l (l^=r^+h^).

The side view of the cone is a sector with a radius of l and an arc length of 2πr.

∴The lateral area of ​​the cone = (1/2)(2πr)l=πrl