#### Heron's formula

Anthony Schwartz

0

How do I prove the Heron's formula for the area of a triangle with sides a, b \text{ and } c and s= \frac{a+b+c}{2} : A = \sqrt{s (s-a)(s-b)(s-c)} ?
I found the Wikipedia article (https://en.wikipedia.org/wiki/Heron%27s_formula) giving the proof, but can anybody provide a good intuitive proof?