The tires on your bicycle have a diameter of 9 inches. How many rotations does each tire make when you travel 300 feet? Round your answer to the nearest whole number.
300/(9/12 x pi) = 127 rotations
Diameter = 9in = 3/4 ft so.......the radius = 3/8 ft
One rotation = [ 2pi* r] ft = 2pi * (3/8) ft = 3pi/4 ft
300 / (3pi/4) = (4/3) * 300 / pi = 400 / pi ≈ 127.32 = 127 rotations