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The diameter of a cycle wheel is 28 cm. How many revolutions will it make in moving 13.2 km? |
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Answer» Distance travelled by the wheel in one revolution `= 2 pi r = (22)/(7) xx 28 = 88 cm` Total distance travelled by the wheel `= 13.2 xx 1000 xx 100 cm` Number, of revolutions made by the wheel `= ("Total distance")/("circumference")` `= (13.2 xx 1000 xx 100)/(88) = 15000` revolutions |
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