A river 2 m deep and 45 m wide is flowing at the rate of 3 km/h. Find the quantity of water that runs into the sea per minute.

It is given in the question that,


Area of cross section of river = 45m × 2m = 90 m2


 


Rate of flow = 3 km/hr 



= 50 m/min


Therefore,


Volume of water flowing through the cross-section in one minute = 90 m2 × 50 m/min


 


= 4500 m3 per minute


 

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