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Answer :

Given :

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 = 40 m

So, we get,

Volume of water flowed in 1 min

= \((\frac{100}{3} × 40 × 3)\) \({m}^{3}\)

= 4000 \({m}^{3}\).

Therefore, in 1 minute, 4000 \({m}^{3}\) water will fall in the sea.

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