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If a river 2.5 m deep and 45 m wide i...

If a river 2.5 m deep and 45 m wide is flowing at the rate of 3.6 km per hour, then the amount of water that runs into the sea per minute is (a) 6650 cu. m    (b) 6750 cu. m    (c) 6850 cu. m    (d) 6950 cu. m

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