For a hydraulically efficient rectangular channel of bed width 5 m, th

1.	For a hydraulically efficient rectangular channel of bed width 5 m, the hydraulic radius is
A.	0.5 m
B.	1.25 m
C.	2.75 m
D.	4.25 m
Answer» C. 2.75 m

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For a hydraulically efficient rectangular channel of bed width 5 m, the hydraulic radius is

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