A Circular track has a radius of 140 m . A boy runs on this track at a spéed of 8.8km/hr. How long will it take to run 12 rounds of the track?
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1 hr 20 min
circumference:- 2x22/7x140 m
=880m
dis. in 12 rounds=12x880 m
=10560m
=10.56km
total time to complete 10.56 km= 10.56/8.8 hrs
=1.20 hrs
It means 1 hour 20 min
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Answer:
The time taken to cover the distance is 1.2 hr
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