Question

Find the area of the composite figure.

A) 103.5

B) 39.5

C) 42.95

D) 64.25

Answer 1

D) 64.25

Explanation:

Break the figure up into 2 shapes: half-circle with radius of 5; triangle with base of 10 and height of 5

Area-half-circle = πr² = (π(5)²) / 2 = 25π /2 = 39.27

Area-triangle = 1/2bh = 1/2(10)(5) = 25

Atotal = 25 + 39.27 = 64.27

closest answer is D) 64.25. They used π=3.14 to get this answer.