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A canal is 300 cm wide and 120 cm deep. The water in the canal is flowing with a speed of 20 km/h. How much area will it irrigate in 20 minutes if 8 cm of standing water is desired?

Asked by Topperlearning User 20th February 2014, 1:44 PM
Answered by Expert
Answer:

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

= m= 300000 m2 = 30 hectares

Answered by Expert 20th February 2014, 3:44 PM
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