Question

A river 2m deep and 45m wide is flowing at the rate of 3 km per hour . Find the quantity of water that runs into the sea per minute

Answer 1

HELLO DEAR,

Given, a river 2m deep and 45m wide is flowing at the rate of 3km per hour.

Area of cross section of the river = 2 * 45 = 90 m2

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

                                                                                                 = 90 * 3 km/hr

                                                                                                 = 90 * (3000/60) m/min

                                                                                                 = 45 * 100

                                                                                                 = 4500 m3

Since 1 m3 = 1000 litres

So, 4500 m3 = 4500 * 1000 litres = 4500000 litres

So, in 1 minute, water will fall into the sea is 4500000 litres.
I HOPE ITS HELP YOU DEAR,
THANKS