How do you use Heron's formula to determine the area of a triangle with sides of that are 12, 18, and 19 units in length?
≈104.635 square units
This is a 2 step process.
Step 1: Calculate half of the perimeter (s ) of the triangle
where a , b and c are the sides of the triangle
let a = 12 , b = 18 and c = 19
Step 2: Calculate the area (A ) using
#=sqrt(24.5xx12.5xx6.5xx5.5)≈104.635" square units"#