Question

The sides of the triangle are $78m$, $112m$ and $50m$ respectively. What is the area of the triangle?

Answer 1

$a=78m$, $b=112m$, $c=50m$
$s=\frac{1}{2}(78+112+50)=120m$
$s-a=42m,s-b=8m,s-c=70m$
$\therefore$ Area $=\sqrt{120\times 70\times 42\times 8}$
$=1680$ sq.m