Question

Find the area of the shaded portion if we know the outer circle has a diameter of 4 m and the inner circle has a diameter of 1.5 m.

A. 1.8 m²

B. 43.2 m²

C. 12.6 m²

D. 10.8 m²

Answer 1

π(2^2 - .75^2) = 55π/16 m² = 10.8 m²

D is the correct answer.