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The frequency (rotations in one second) is 3
the radius of wheel is 6.25/2=3.125 meter
perimeter of wheel=2 \pi (3.125)
lets say it take n rotations to travel 600m
2 \pi (3.125)n=600
therefore n=95.5 (app.)
as its frequency is 3
time taken is 31.83 s (app.)

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