A rectangular field is measured 290 m by 210 m. How long will it take for a girl to go two times round the field, if she walks at the rate of 1.5 m/sec?
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Perimeter of field = 2(l+b) = 2(290+210) = 1000m
Total distance 2*1000 = 2000m
Time = Distance/Speed = 2000/1.5 = 1333.34 sec(approx)
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