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?

Answer 1

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 m³ water will fall in the sea.