Question

Use Heron's formula to find the area of the triangle. Round to the nearest square unit.

a = 8 inches, b = 13 inches, c = 7 inches

Group of answer choices

39 square inches

23 square inches

21 square inches

41 square inches

Answer 1

24.25 in²

Explanation:

s = (a + b + c)/2 = (8 + 13 + 7)/2 = 14 in

s - a = 6, s - b = 1, s - c = 7

so

the area =
`√(14*6*1*7)=24.25`