A rectangular field is 75 m by 50 m .vaani walksbround it at the rate the rate of 3 km per hour.what time will he take in completing 3 rounds.
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perimeter of field=2 (75+50)=250 m
distance for 3 round =250×3=750 m
speed=3km/h=5/6m/s
time=750/5/6=750×6/5=900 seconds
distance for 3 round =250×3=750 m
speed=3km/h=5/6m/s
time=750/5/6=750×6/5=900 seconds
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