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19 February, 18:37

A 10-speed bicycle tire has a diameter of 27 in. In highest gear, the tire rotates 3.4 times with each petal turn. About how far does the bike travel, in this gear, with each pedal turn?

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  1. 19 February, 18:43
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    It travels 288.252 in.

    We first find the circumference, or distance around, the tire. The formula for circumference is C=πd:

    C=3.14 (27) = 84.78 in.

    Since it rotates 3.4 times per petal turn in this gear, we multiply this by the circumference:

    3.4 (84.78) = 288.252 in
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