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Water is flowing uniformly in a finished-concrete channel of trapezoidal cross section with a bottom width...

Water is flowing uniformly in a finished-concrete channel of trapezoidal cross section with a bottom width of 0.7 m, trapezoid angle of 50°, and a bottom angle of 0.45°. If the flow depth is measured to be 0.45 m, determine the flow rate of water through the channel. Manning coefficient (n) for finished concrete is 0.012.

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