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Possible Duplicate:
Linear velocity word problems?

How would I solve the following problem?

If a car wheel 78 cm in diameter rotates at 600 r/min what is the speed of the car in km/h?

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    I added the solution of this to your previous question, which included this one.2012-06-25
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    Nobody told you that it has contact with the ground...2012-07-31

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