Question

Find the area of the shaded region.

Answer 1

15.7 cm^2

Explanation:

Circumference C = 2πr

C = 2 x 4 x π = 8π

A = πr^2 = π4^2 = 16π

Area of the shaded region = (16π x 7.85)/8π = 2 x 7.85 = 15.7 cm^2