SOLUTION: My car tire has a diameter of 20 inches. How many times can I expect that tire to rotate if I drive 1 mile?

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Question 837804: My car tire has a diameter of 20 inches. How many times can I expect that tire to rotate if I drive 1 mile?
Answer by LinnW(1048) About Me  (Show Source):
You can put this solution on YOUR website!
A tire that has diameter of 20 has circumference = %28pi%2920
So %28pi%2920 is the distance traveled with one tire revolution.
1 mile / %28pi%2920 will give us the number of rotations.
To work this we need to convert 1 mile to inches.
Since one mile is 5280 ft, one mile = 5280 * 12 inches
1 mile = 63360
The number of rotations = 63360%2F%28%28pi%2920%29 = 3168%2F%28%28pi%29%29
approximately 1008.4057 rotations