A trapezoidal channel is 10.0 m wide at the base and has a side slope of 4 hori

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A trapezoidal channel is 10.0 m wide at the base and has a side slope of 4 horizontal to 3 vertical. The bed slope is 0.002. The channel is lined with smooth concrete (Manning's n = 0.012). The hydraulic radius (in m) for a depth of flow of 3.0 m is

Options:

A . 20.0

B . 3.5

C . 3.0

D . 2.1

Answer: Option D

-NA-

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