#### Question

A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water will fall into the sea in a minute?

#### Solution

Rate of water flow = 2 km per hour

`=(2000/60)"m/min"`

`=(100/3)"m/min"`

Depth (*h*) of river = 3 m

Width (*b*) of river = 40 m

`"Volume of water flowed in 1 min "=(100/3xx40xx3)m^3=4000m^3`

Therefore, in 1 minute, 4000 m^{3} water will fall in the sea.

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Solution A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water will fall into the sea in a minute? Concept: Volume of a Cuboid.