Question

How long will a man take to make a round of a circular field of radius 21m. Cycling at the speed of 8 km/h..?

Answer 1

Distance he has to cover=circumference of the field=2×22/7×21
=132m=0.132km
Time=distance ÷speed
=0.132÷8
=0.0165hr (0.0165×60=0.99)
=0.99min (0.99×60=59.4)
=59.4seconds
Therefore' He will take 59.4 seconds to take one round of the field at the speed of 8km/h
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