Question

The circumference of a circle is 9 pi m. What is the area, in square meters? Express your answer in terms of pi​

Answer 1

The circumference of a circle = 2πr = 9π inches

Or, 2πr = 9π

Or, r = 9/2

Or, r = 4.5 inches

The area of a circle = πr²

Or, The area of a circle = π×4.5×4.5

Or, The area of a circle = 20.25π square inches

Explanation: