How do you use Heron's formula to determine the area of a triangle with sides of that are 14, 12, and 17 units in length?
1 Answer
Apr 3, 2016
≈ 83.03 square units
Explanation:
This is a 2 step process.
Step 1 : Calculate half the perimeter (s) of the triangle
let a = 14 , b = 12 and c = 17
hence s
= (a+b+c)/2 = (14+12+17)/2 =43/2 = 21.5 Step 2 : Calculate area (A) ,using
A = sqrt(s(s-a)(s-b)(s-c)
= sqrt(21.5(21.5-14)(21.5-12(21.5-17)
= sqrt(21.5xx7.5xx9.5xx4.5) ≈ 83.03" square units "
