how long a man will make to take a round of circular field of radius 21 m cycling at a speed of 8 kilometre per hour
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A man will make to take a round of the circular field of radius 21 m at the speed of 20/9 meter per second in t seconds
t = D/S
t = 2πr / S
t = 132 / S
t = 132*9 / 20
t = 59.4 seconds
the man take 1 minute (approx) to take round of the circular field.
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