Question

What is the radius of a circle with the circumstances of 81 pi square inches? ​

Answer 1

40 1/2 inches

Explanation:

Maddy, I think you meant your circumference (not circumstances) is 81π inches (not square inches).

C = 2πr, so:

81π in

r = ------------ = (81/2) inches, or 40 1/2 inches This is the radius.

2π