Question

The radius of the wheel of a car is 0.45m . How many revolutions will it make in travelling 23.4km

Answer 1

r=0.45m
d=23.4km

$circumfrence = 2\pi \: r$
c=2x3.14x0.45=2.826
revolution=c/d
revolution=8.2

Answer 2

This is the actual answer to this question. See the picture