Question

A river 3 m deep and 40 m wide is flowing at the rate of 2.5 km per hour. How much water will ​fall into the sea in a minute​

Answer 1

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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