Question

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Answer 1

$Answer \: refer \: to \: attachment$

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Answer 2

Step-by-step explanation:

HEY MATE ..

HERE , AREA OF RIVER =DEPTH × WIDTH .

=4×40 = 160M^2.

AMOUNT OF WATER THAT FALLS INTO THE SEA ⇒AREA OF RIVER ×FLOW RATE .

⇒ 160m^2× 2 km \hr

⇒160 ×2×1000m^3 /( 60 ) min

⇒5333.3 m^3/min.

5333.3 m of water falls into the sea permin.

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