For best hydraulic rectangular cross - section of an open channel, its

1.	For best hydraulic rectangular cross - section of an open channel, its depth should be equal to
A.	width
B.	two times the width
C.	half of the width
D.	three - eighth of the width
Answer» D. three - eighth of the width

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For best hydraulic rectangular cross - section of an open channel, its depth should be equal to

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