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Radius and distance

  1. Nov 11, 2006 #1
    The warranty on a new tire says that an automobile can travel for a distance of 101000 km before the tire wears out. The radius of the tire is 0.33 m. How many revolutions does the tire make before wearing out ?

    Maybe I should try using C=2pi*r? and then multiply by the distance?
    Last edited: Nov 11, 2006
  2. jcsd
  3. Nov 11, 2006 #2
    Not quite write. Try something more like C*n =d.
  4. Nov 11, 2006 #3


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    Multiply? Think again.
  5. Nov 11, 2006 #4
    divide :) thanks
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