Given a = 5 , b = 9 , and c =12 , use Heron's Area Formula to find the area of triangle ABC . Round answer to two decimal places.
A) 20.40 sq. units
B) 16.97 sq. units
C) 19.60 sq. units
D) 12.65 sq. units
E) 17.40 sq. units

Question

Quizplus · Accepted Answer

Heron's Area Formula: Area = √(s(s - a)(s - b)(s - c)) where s = (a + b + c) / 2s = (5 + 9 + 12) / 2 = 13Area = √(13(13 - 5)(13 - 9)(13 - 12)) = √(13(8)(4)(1)) = √416 = 20.40 sq. units

Given a = 5 , B = 9 , and C