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October 25, 2014

Homework Help: Geometry check my answer?

Posted by Skye on Sunday, January 23, 2011 at 3:28pm.

The diameter of a car tire is approximately 0.6meters. The warranty is good for 70,000 km. About how many revolutions will the tire make before the warranty is up? More than a million? a billion?

----------------------- my work
c=pi*d
c=3.14*0.6
c=1.884 meters

1km=1000 meters
so 1.884 divided by 1000 = 0.001884 km?

So more than a billion revolutions? Is this correct?

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