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  • How many times will the wheel of a car rotate in a journey of 2002 m if the radius of the wheel is 49 cm.

How many times will the wheel of a car rotate in a journey of 2002 m if the radius of the wheel is 49 cm.

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\\\text{circumference of the wheel } $= 2\pi r$ \\ $2 \times 3.14 \times 49$ $ = 308 \mathrm{cm}$ \ or \ $3.08 \mathrm{m}$ \\ \text{revolution } $= 2002 / 3.08 $ = 650 \\ \text{so, the wheel well revolve 650 times in journey of 2002 metres.}

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