SOLUTION: A cars tires are moving at 550 revolutions per minute while the car travels at 55mph. What is the radius (in inches) of the wheels?

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Question 428931: A cars tires are moving at 550 revolutions per minute while the car travels at 55mph. What is the radius (in inches) of the wheels?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A cars tires are moving at 550 revolutions per minute while the car travels at 55mph.
What is the radius (in inches) of the wheels?
:
Find the inches per minute
%2855%2A5280%2A12%29%2F60 = 58080 in/min
:
Find the inches per revolution
58080%2F550 = 105.6 inches, the circumference of the tire
:
Find the radius
2%2Api%2Ar = 105.6
r = 105.6%2F%282%2Api%29
r = 16.81 inches is radius of the tire