a person walks at 4km/hr. how long will he take to go around a square field four time ,the area of which being 900sq. meters.
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Answer: Area of square=side2side2=2500side=50 m .Perimeter of Square=4×side=4×50=200 m .Distance to be covered in 5 rounds=5×200=1000 m .=1 km .We know ,Time=DistanceSpeed=14 hours=14×60=15 minutes .He will take 15 minutes to go round a square park 5 times .
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