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A river 3m deep and 40 …

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A river 3m deep and 40 m wide is flowing at the ratio of 2km per hour.How much water will fall into in a minute

Posted by Crazy Girl 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

Given, a river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour.

Area of cross section of the river =3 × 40=120m²

Now, volume of water flowing through this cross section in every minute = Area * rate

= 120 × 2 km/hr

= 120 ×(2000/60) m/min

= 2 × 2000

= 4000m³

Since1m³=1000 litres

So, 4000m³=4000 × 1000 litres =4000000 litres

So, in 1 minute, water will fall into the sea is 4000000 litres.

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