If the lengths of three sides of a triangle are known, then the following formula, known as Hero's (or Heron's) formula, is sometimes used: A = V s(s - a)(s - b)(s - c) where a, b, and c are the given...

Extracted text: If the lengths of three sides of a triangle are known, then the following formula, known as Hero's (or Heron's) formula, is sometimes used: A = V s(s - a)(s - b)(s - c) where a, b, and c are the given lengths of the sides, and s = 0.5(a + b + c). Use this formula to find the area (correct to the nearest square foot). (Assume a = 160 ft, b = 150 ft, c = 120 ft, and d = 220 ft.) ft2 b a d Need Help? Read It Submit Answer