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1. A cyclist moving on a circular track of radius 100 meters completes one revolution in 2 minutes. What is the average speed of cyclist (approx.)?

A. 314 m/min

B. 200 m/min

C. 300 m/min

D. 900 m/min

Solution:

Distance covered in one complete revolution

\begin{aligned} = 2 π r \\ = \frac{2 \times 100 \times 22}{7} \\ \approx 628 m \\ Average speed \\ = \frac{628}{2} \\ = 314 m / min \end{aligned}

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