Question

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

Answer 1

Answer:

40 1/2 inches

Step-by-step 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