The area of a square field is 1396 sq.m . How much time will Rita take to run 7 times around it at the rate of 3 km/h?
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Side=a =v1396=37.36m
perimeter=4a=4x37.36=149.44m
7 times the perimeter: 149.44x7
= 1046.08m=1.046 km
time taken=1.046 / 3=0.348hr
= 0.348 x60=2 min 53 Secappr:
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