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Question
A water canal 6m wide and 1.5 m deep is flowing with the speed of 10km/h. How much the area will it irrigate in 30minutes if 8cm of standing water is needed
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Solution
Speed of water flowing through canal =10 km/h =10, 000 m/h
Volume of water flowing through canal in 1 hour = 6 × 1.5 × 10,000 = 90,000 m3
Volume of water flowing through canal in 30 minutes = 900002=45,000m3
Standing water = 8 cm =0.08 m
According to given condition we have:
Area which can be irrigated × 0.08 = 45000
⇒ Area which can be irrigated = 450000.08=562500m2
Speed of water flowing through canal =10 km/h =10, 000 m/h
Volume of water flowing through canal in 1 hour = 6 × 1.5 × 10,000 = 90,000 m3
Volume of water flowing through canal in 30 minutes = 900002=45,000m3
Standing water = 8 cm =0.08 m
According to given condition we have:
Area which can be irrigated × 0.08 = 45000
⇒ Area which can be irrigated = 450000.08=562500m2
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