Question

How long will a girl take to walk around the boundary of a square field of area 9 hectares at the rate of 6 km/hr? ( 1 hectare = 10000 sq m)​

Answer 1

Answer:

Area of Field = 90000 m²

So, Side = 300 m  

So, Perimeter of field = 300*4 = 1200 m = 1.2 km

        So, Time taken = Distance/Speed

                                 = 1.2/6  

                                 = 1/5 hours

                                 = 12 minutes

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