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30 March, 14:46

A pebble is stuck in a bicycle tyre. As the tire turns it leaves a mark on every 69 inch. How would u calculate the circumference?

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  1. 30 March, 15:55
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    1-Circumference is equal to the diameter times pi. The diameter is twice the radius. So r=9 then d=18. 18 times pi is 56.55 or 18pi.

    2-23pi

    3-16 times 2 is 32. so 32pi is your answer.

    1 - C=20.5 the diameter would be C/pi so 20.5/pi = 6.53 so the radius would be 3.265.

    1-203.08

    2-1.97 (these are the same as the one above)

    1-it would be 69 inches
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