Question

a river 3 meter deep and 40meter wide is flowing of the rate of 2 kilometer per hour how much water will fall into the sea in 2 minute

Answer 1

HELLO DEAR,

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 2 minute, water will fall into the sea is 2 ×4000000 litres
=8000000litres.

I HOPE ITS HELP YOU DEAR,
THANKS