Question

A river 2m deep and45m wide is flowing at the rate of 3Km/h.Find the quantity of water that runs into the sea per minute.

Answer 1

area of cross section of river= 2 x 45 = 90 m^2
so, water flowing into the sea= area of cross section x rate of flowing water
                                               = 90 x 3000
                                               = 270000 m^3
there water flowing per minute= 270000 / 60 = 4500 m^3

Answer 2

Answer:

Step-by-step explanation:

Speed of water flowing= 3km/hr

Into the sea

Given,

Depth(height) =2m

Width(breadth) =45m

So we have to find the length,

For that, we've to convert km into

meter and hour into min...

we know that,1km=1000m

then,3km=3000m

and, 1 hr =60min

So, length=3000/60

= 50m/min

Therefore, volm of water= 50×45×2

that runs into the sea per

min

=4500m^3

Hope you understood easily...