A river 3m deep and 40m wide is flowing at the rate of 2 km per hour. How much water will fall into the sea in a minute?
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1
Answer:
Here, Area of river = depth × width
=3×40=120m
2
amount of water that falls into the sea ⇒ area of river × flow rate
⇒120m
2
×2
hr
km
⇒120×
(60)min
2×1000m
3
⇒4000
min
m
3
∴4000m
3
of water falls into the sea permin.
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