Given three sides of a triangle, print area of this triangle.
Test cases:
In: 2,3,42,3,4
Out: 2.904737509655562.90473750965556
In: 3,4,53,4,5
Out: 66
AssumeGiven the three side asides \$a\$,b \$b\$,c always a>0 and \$c\$,b>0 you can assume that \$a>0\$,c>0 \$b>0\$,a+b>c \$c>0\$,b+c>a \$a+b>c\$,c+a>b \$b+c>a\$, and \$c+a>b\$.
This is code-golf, shortest answer per language in bytes wins.