Step-by-step explanation: There are 5,280 ft in a mile (a good thing to have memorized) multiply that by 12 to find inches. 5280*12 = 63360. Then we divide this by the circumference of the circle. C = 2πr. The radius is half the diameter so C = dπ. 25π = 78.54. Then we divide 63360/78.54 = 806.72 rotations.
