Water in a river 2m Deep and 45 meter wide is flowing at the rate of 3 km per hour find the amount of water that runs into the sea per minute
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Given that rate of flow 3 km/h
Depth (h) of river = 2 m
Width (b) of river = 45 m
Area of cross-section of river
= 45 × 2 = 90 m2
Rate of flow 3 km/h= 3 × 1000/60
= 50 m/min
Volume of water is flowing in cross-section in 1 minute is= 90 × 50 = 4500 m^3 per minute
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