How do you use Heron's formula to find the area of a triangle with sides of lengths 4, 2, and 3?
1 Answer
Mar 5, 2016
≈ 2.9 square units
Explanation:
This is a 2 step process.
step 1: Calculate half of the perimeter ( s )
step 2: calculate the area (A)
let a = 4 , b = 2 and c = 3
step 1 :
s=a+b+c2=4+2+32=92=4.5 step 2 :
A=√s(s−a)(s−b)(s−c)
=√4.5(4.5−4)(4.5−2)(4.5−3)
⇒A=√4.5×0.5×2.5×1.5≈2.9 square units
