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[" The diameter of a wheel of a bus is "90cm" which makes "315" revolutions per minute "],[" Determine its speed in kilometres per hour.[Use "pi=22/7J],[" mand and is "16cm" .Find another "]

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The diameter of a wheel of a bus is 90cm which makes 315 revolutions per minute. Determine its speed in kilometres per hour.( Take pi=(22)/(7))

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The diameter of the driving wheel of a bus is 140cm. How many revolutions per minute must the wheel make in order to keep a speed of 66km per hour?

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The diameter of the driving wheel of a bus is 140 cm. How many revolutions per minute must the wheel make in order to keep a speed of 66 km per hour?

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