Q9 of 75 Page 228

A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water will fall into the sea in a minute?

Rate of water flow = 2 km per hour

= () m/ min


= () m/ min


Depth (h) of river = 3 m


Width (b) of river = 40 m


Volume of water flowed in 1 min = ( * 40 * 3)


= 4000 m3


Therefore, in 1 minute, 4000 m3 water will fall in the sea


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