Area of a triangle

There are several ways to compute the area of a triangle. In this code is implemented Heron's Formula.

You can calculate the area of a triangle if you know the lengths of all three sides, using a formula that has been known for nearly 2000 years.

It is called "Heron's Formula" after Hero of Alexandria (see below)

Just use this two step process:

Step 1: Calculate "s" (half of the triangles perimeter):

p = (a+b+c)/2
Step 2: Then calculate the Area:

herons formula A = sqrt( p(p-a)(p-b)(p-c) )