Question

a river 3m deep and 40m wide ins flowing at rate of 2km/hr. how much water will fall into the sea in 1 minute?

Answer 1

Given Water flowing in river in 60 minutes = 2km

                                                                       = 2000 m.


Then the water flowing in river in 1 minute = 2000/60

                                                                       = 100/3 m.

Length = 100/3m

Breadth = 40m

height = 3m


Volume of water falling in sea in1 minute = l * b * h

                                                                     = (100/3 * 40 * 3)

                                                                     = 4000m^3.

                                                                     = 4000000 litres.

Hope this helps!                                                                       

Answer 2

$\huge{\gray{\boxed{\boxed{\pink{\ulcorner{\mid{\overline{\underline{\bf{Answer:-}}}}}}\mid}}}}$

The river is 3m deep, 40m wide and is flowing at the rate of 2km\hour.

$\sf\red{The \: length \: of \: water \: flow \: in \: 1min= \frac{2000}{60} }$

$\sf\pink{ = \frac{100}{3}m }$

$\sf\gray{Therefore, here \: l = \frac{100}{3}m,b =40m \: and \: h = 3m }$

$\sf\pink{Thus \: required \: volume \: of \: water= \: \frac{100}{3} \times 40 \times 3 }$

$\sf\gray{ = 4000 {m}^{3} }$