**Guide :High School **

# Find the area of a triangle with sides a = 5, b = 8, and c = 11.

Find the area of a triangle with sides a = 5, b = 8, and c = 11. A. 12.46 B. 20.88 C. 32.17 D. 18.33**The correct answer is dsqrt(s(s-a)(s-b)(s-c)), where s = (a+b+c)/2.Therefore s = (5+8+11)/2 = 12, and we get sqrt(12*7*4*1) = 18.33.**...