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A river 10 metres deep and …

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A river 10 metres deep and 100 metres wide is flowing at the rate of 4.5 km per hour. Find how namy cubic metre of water runs into the sea per second.

Posted by Sundram Jha 5 years ago

CBSE > Class 08 > Mathematics

1 answers

Yogita Ingle 5 years ago

Area of cross section of river = 10×100 =1000sqm

Volume of water flow in 1 hour = Area of cross section ×Speed of water flow

V=1000× 4.5 km/h

V= 1000 ×4.5 ×5/18 m/sec

V=1250 m^3

1m ^3 =1000 liter

1250 m^3 = 1000×1250= 1250000 liter in 1 sec

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