# How do you use Heron's formula to determine the area of a triangle with sides of that are 7, 15, and 11 units in length?

Mar 28, 2018

35.960

#### Explanation:

Heron's Formula

=S= $\frac{A + B + C}{2}$

=S= $\frac{7 + 15 + 11}{2}$

=S=16.5 (Semi perimeter)

Now Area

Area = sqrt(S(S-A)(S-B)(S-C)

= sqrt(16.5(16.5-7)(16.5-15)(16.5-11)

Area =35.960