Maybe it will help you find it...
In this code, the area of each triangular surface of the 3D surface is calculated by Heron's formula.
This formula helps you find the area of the surface with the side lengths of the given triangle.
Heron's Formula:
If the side lengths of a triangle are aa, bb and cc, the area AA is calculated as follows:
Here, ss is the half perimeter of the triangle and is calculated as follows:
