question no 9 solve it
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Cross section area=7*6=42 m^2
Depth=5m
Volume of water=cross section area*depth
=42*5=210 m^3
Depth=5m
Volume of water=cross section area*depth
=42*5=210 m^3
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11*6*5 = 22/7*3.5*3.5*h
330 = 38.5h
h = 330/38.5 = 8.57 m