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.​

Answer 1

#BAL

Given, a river 3m deep and 40m wide is flowing at the rate of 2km per hour.

Area of cross section of the river = 3 * 40 = 120 m2

Now, volume of water flowing through this cross section in every minute = Area * rate

                                 = 120 * 2 km/hr

                                   = 120 * (2000/60) m/min

                                     = 2 * 2000

                                      = 4000 m3

Since 1 m3 = 1000 litres

So, 4000 m3 = 4000 * 1000 litres = 4000000 litres

So, in 1 minute, water will fall into the sea is 4000000 litres.

Answer 2

Answer:

40m3

Step-by-step explanation:

Convert 2kmph to m per second

I. e, 100/3m/sec

Volume = lbh

= 3*40*100/3

= 40 m3