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InterviewSolution
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27. Water in a canal, 30 dm wide and 12 dm deep, is flowing with a velocityof 20 km per hour. How much area will it irrigate, if 9 cm of standingwater is desired? |
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Answer» Depth = 12dm = 1.2mwidth = 30dm = 3mflow velocity = 20km/h = 20,000 m/htime = 30minute = 0.5 hourstanding water required = 9cm = 0.09mLet the area = A m² Volume of water will be same1.2m×3m×20,000 m/h× 0.5 h = A× 0.09⇒ A = 36000/0.09⇒ A = 4,00,000 m² = 40 hectare 40 hectare plot can be irrigated. |
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