SOLUTION: A tire is 33 inches in diameter. If the speedometer reads 15mph how long is one revolution of the tire in seconds?

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Question 1107729: A tire is 33 inches in diameter. If the speedometer reads 15mph how long is one revolution of the tire in seconds?
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
The circumference of the tire is +33%2Api+=+103.672558+ inches, which is about 8.63938ft
The speed of 15mi/hr is equivalent to 15mi/hr * 1hr/3600sec * 5280ft/mi = 22 ft/sec
Thus the time for one revolution is 8.63938ft/(22 ft/sec) = +highlight%280.3927s%29+ to 4 decimal places