# How do you use Heron's formula to find the area of a triangle with sides of lengths 7 , 4 , and 6 ?

$\setminus \sqrt{\left(\frac{17}{2}\right) \left(\frac{3}{2}\right) \left(\frac{9}{2}\right) \left(\frac{5}{2}\right)} = \left(\frac{3}{4}\right) \setminus \sqrt{255}$
$\setminus \sqrt{s \left(s - a\right) \left(s - b\right) \left(s - c\right)}$