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A river 2m deep and 45 m wide is flowing at the rate of 3 kmph the amount of water that runs into the sea per minute is?

Correct answer: A. 4500 M3

  • A. 4500 M3
  • B. 27000 M3
  • C. 3000 M3
  • D. 2700 M3

Explanation

The river's cross-sectional area is 2 m x 45 m = 90 m2. Its speed is 3 km/h = 3000 m/h = 50 m/min, so the water flowing each minute is 90 m2 x 50 m/min = 4500 m3/min. The likely alternative is 2700 m3, option b, from using an incorrect conversion for 3 km/h or an incorrect cross-sectional area.

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