Q11 of 189 Page 512

A river 1.5 m deep and 30 m wide is flowing at the rate of 3 km per hour. The volume of water that runs into the sea minute is

Volume of a cuboid = Length × Breadth × Height


Length of the river = Speed of river = 3km (in an hr)


1km =1000 m and 1 hour =60 min


Speed in m per minute =


Volume of water that runs in a minute = 1.5 m × 30 m × 50 m = 2250 m3

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