This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Heron's Formula for calculating area of a triangle with sides, a, b , and c is:

Let the semi-perimeter be s.

 s = \frac{a+b+c}{2} \\ \\ \\ Area\ A = \sqrt{s\ (s-a)\ (s - b)\ (s - c)} \\ \\

This is the commonly known Heron's formula. There may be other forms of it.