The diameter of a wheel of a bus is 90 cm which makes 315 revolutions per minute. Determine its speed in kilometres per hour. [Use π = 22/7].

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Solution

We have to calculate the speed of the bus. The wheel makes 315 revolutions per minute. We have,

Diameter of the wheel

So distance travelled in one revolution,

So,

So,

Convert the unit of speed as,

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Q. The diameter of a wheel of a bus is

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315

revolutions per minute. Determine its speed in kilometer per hour. (Use

π = \frac{22}{7}

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The diameter of a wheel of a bus is 90 cm which makes 315 revolutions per minute. Determine its speed in kilometres per hour. [Use π = 22/7].

We have to calculate the speed of the bus. The wheel makes 315 revolutions per minute. We have, Diameter of the wheel So distance travelled in one revolution, So, So, Convert the unit of speed as,

We have to calculate the speed of the bus. The wheel makes 315 revolutions per minute. We have,

Diameter of the wheel

So distance travelled in one revolution,

So,

So,

Convert the unit of speed as,