Question

The radius of the tires of a car is 18 inches, and they are revolving at the rate of 673 revolutions per minute. How fast is the car traveling in miles per hour?

Answer 1

I have found an angular velocity (omega) of 80,760 Pi radians per hour (673 revs/1 min)*(2 Pi rads/1 rev)*(60 min/1 hr). Where do I go from here?

Answer 2

so u know the formulae right

Answer 3

velocity=radius*omega, right?

Answer 4

yep

Answer 5

But simply multiplying 80,760 Pi rad/hour by 18 inches isn't giving me the answer I need, so I must be missing a step.