water in canal, 6 m wide and 1.5m deep ,is flowing with a speed of 10km/h. how much area will it irrigated in 30minutes ,if 8cm of standing water is needed?
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Speed of flow of water =10km/hr
=10×5/18=25/9m/s
Width=6m
Depth=1.5m
Water flowing in the canal in 1 sec. =6×1.5×25/9 m^3
Water flown in 30 minutes =6×15/10×25/9×30×60m^3
=15×50×60m^3
=45000m^3
Let area irrigated =Am^2
A×8/100=45000
A=4500000/8
A=562500m^2
=10×5/18=25/9m/s
Width=6m
Depth=1.5m
Water flowing in the canal in 1 sec. =6×1.5×25/9 m^3
Water flown in 30 minutes =6×15/10×25/9×30×60m^3
=15×50×60m^3
=45000m^3
Let area irrigated =Am^2
A×8/100=45000
A=4500000/8
A=562500m^2
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