Question

A river 3m deep and 40m wide is flowing at the rate of 2km/hour. How much water will fall into the sea in 1 minute.

Answer 1

3*4=120 meter^2
2km= 2000m/hour
1 hour =60min
area*rate=120*2000/60=>4000 m^3

40.00.000 liters water will fall into the sea....

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.

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

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

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

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

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