Question

please answer the question​

Answer 1

Step-by-step explanation:

use the formula to get the answer

Answer 2

$\sf Water\: flowing \:in\: the \:river \:in \:1 \:hour\: \\ = \:2km\:=\:2000m$

$\scriptsize\:\: {(∵ \:1 km \:= \:1000 m)}$

$\sf Water \:flowing \:in \:the \:river \:in \:60 \:min \:= \:2000 \:m$

$\scriptsize\:\: {(∵ 1 \:hour\: =\: 60 min)}$

$\sf Water \:flowing\: in \:the\: river\: in\: 1\: min\: \\= \:\dfrac{2000 m}{60}\:= \:\dfrac{100 m}{3}$

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$\sf ∵ The\: shape \:of \:the\: river\: is\: of \:the\: form\: cuboid$

$\sf Its \:dimensions\: will \:be\: :$

$\sf Length\: =\: \dfrac{100 m}{3} m$

$\sf Breadth \:= \:40 m$

$\sf Height \:= \:3 m$

$\sf ∴ Volume\: of \:water\: falling \: into \:the\: sea\: in \:a \:minute\: \\ \implies length \times breadth \times height$

$\implies ( \dfrac{100}{3} \times 40 \times 3) {m}^{3}$

$\implies (100 \times 40) {m}^{3}$

$\implies 4000 \: {m}^{3}$