Question

How many revolutions will a car wheel of 30in make as the car travels 1 mile? (1 mile = 5280ft)?

Answer 1

30inc=76.2cm 
76.2*pi=76.2pi
1cm=0.0328084 foot
1 mile=5280 ft
5280/0.0328084=160934.4
1 mile=160934.4 cm
160934.4 /76.2pi=672.27
672 revolutions i think