a man runs around a circular field of radius 50 m at a speed of 12 km/hr what time is taken by the man to make twenty rounds of the field
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Answer:
Given that : Radius of circle =r=50 m
Speed of man =12 km/hr =
3600
12×1000
=3.33 m/s
Distance travelled in one round =2πr=314m
⇒ Distance travelled in ten rounds =3140 m
Time taken = Distance÷Speed =
3.33
3140
=942 seconds
∴ Time taken =15 mins 42 seconds
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Answer:
15 minutes 42 seconds kkkkk
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