What is the easiest way for solving the question of class 9th ncert math of exercise 13.5 of math of Surface areas and Volumes chapter of question no. 9 Please help me for the best suggestion of this question A river 3m deep and 40m wide is flowing at the rate of 2km per hour. How much water will fall into the sea in a minute?
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A river 3m deep and 40m wide is flowing at the rate of 2km per hour. How much water will fall into the sea in a minute? Q.9
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Given:
Depth of river, h = 3 m
Width of river, b = 40 m
Rate of water flow = 2km per hour = 2000m/60min = 100/3 m/min
Now, Volume of water flowed in 1 min = (100/3) × 40 × 3 = 4000m3
Therefore, 4000 m3water will fall into the sea in a minute.