Question

A circle has a diameter of 20 inches. What are the circumference and area of the circle?

Answer 1

C = 62.8 in

A = 314.2 in²

Explanation:

r = D/2 = 20/2 = 10 in

C = 2πr = 2π(10) = 62.8 in

A = πr² = π(10)² = 314.2 in²