Question

iWatch 3 metre Deep and 40m wide is flowing at the rate of 2 kilometre per hour how much water will fall into the sea in a min​

Answer 1

Given :

$3 \: Metre \: Deep \: and \: 40 \: m \: wide \: is \: flowing \\ at \: the \: rate \: of \: 2 \: kilometre \: per \: hour$

To find :

$How \: much \: water \: will \: fall \: into \: the \: sea \\ \: in \: a \: min$

Solution :

$Rate \: of \: water \: flow \: = 2 \: km \: per \: hour \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: = \: ( \frac{2000}{60} ) \: m/min \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: = \: ( \frac{100}{3} )m/min \\ \\ depth \: (h) \: of \: river \: = \: 3 \: m \\ \\ width \: (b) \: of \: river \: = \: 40 \: m \\ \\ Volume \: of \: water \: flowed \: in \: 1 \: min \: \\ \\ = (\frac{100}{3} \times \: 40 \: \times \: 3) \: {m}^{3} \\ \\ = \: 4000 \: {m}^{3} \\ \\ \implies \: Thus \: in \: 1 \: min \: 4000 \: {m}^{3} \: water \: will \\ \: be \: fall \: into \: the \: sea$