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Heron’s formula: Area = Triangle PQR has sides measuring 9 feet and 10 feet and a perimeter of 24 feet. What is the area of triangle PQR? Round to the nearest square foot.

2 Answers

6 votes
Hello,

Let's assume a,b,c the 3 sides of the triangle.

a=9
b=10
c=24-a-b=5


p= (a+b+c)/(2) =12\\ S= √(p(p-a)(p-b)(p-c)) = √(12*3*2*7) = √(504) =22,4499...\approx{22}
User Pranjal Doshi
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5 votes
the answer is 22 square feet. I just took the practice.
User Ajay Kadyan
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