Question

how long will a man take to make a round of a circular field of radius 21m cycling at the speed of 8km hour

Answer 1

Radius of circular field=21m
Perimeter of field=2πR
=2×22/7×21
=44×3
=132m
=0.132 km
time=distance/speed
=0.132/8
=0.165 hrs.
A man will take 0.165hrs.
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