Question

if a bowling ball is 8.5 inches in diameter and is rolled down a 60 foot bowling lane, how many complete revolutions would it make

Answer 1

Calculate the circumference of the ball and then divide this circumference into 60 ft:

C = pi*d = pi*(8.5 in)

Then,

60 ft 12 in
-------- * --------- divided by 8.5 pi in comes out to:
1 1 ft

720 in 1
--------- * -------------- = 26.96, or about 27, complete revolutions.
1 8.5 pi in