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The discharge in a channel with bottom width 3 m is 12 m3 s–1. If Manning’s...

The discharge in a channel with bottom width 3 m is 12 m3 s–1. If Manning’s n is 0.013 m-1/3 s and the streamwise slope is 1 in 200, find the normal depth if:
(a) the channel has vertical sides (i.e. rectangular channel);
(b) the channel is trapezoidal with side slopes 2H:1V.

(Answer with steps plz)

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