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A canal is 300cm wide and 120 cm deep. The water in the canal is flowing with a speed of 20 kmper hour . How much area will it irrigate in 20 min if 8cm of standing water is desired

Posted by Mahek Agrawal 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Jiya Mittal 4 years, 11 months ago

Volume of water that flows in the canal in one hour = width of the canal x depth of the canal x speed of the canal water = 3 x 1.2 x 20 x 1000m3 = 72000 m3 In 20 minutes the volume of water in the canal = 72000 x m3 = 24000 m3 Area irrigated in 20 minutes, if 8 cm, i.e., 0.08 m standing water is required = m2 = 300000 m2 = 30 hectares

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