Question

D) Find the area of the following polygon. 16 cm 2 cm 5 cm 5 cm 3 cm 6 cm​

Answer 1

Answer:

Let the sides be a = 3, b = 5, c = 6

First calculate the semiperimeter; s = (3 +5 +6)/2 = 7

Then calculate s - a = 4, s - b = 2, s - c = 1

Area = Sqrt(s(s -a)(s - b)(s - c)) = Sqrt(7*4*2*1)