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An automobile with tires that have a radius of 0.260 m travels 76000 km before wearing them out. How many revolutions do the tires make, neglecting any backing up and any change in radius due to wear?

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Answer:

Explanation:

circumference of the tyre = 2πr = 2 x 3.14 x 0.26 = 1.6328m

76000km = 76000000m

no of revolutions required

= 76000000/1.6328 = 46546 revolutions.

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