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Calculate the wetted perimeter for a rectangular channel having top width of 4.5m and depth of 3m.

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+1 vote
in Fluid Mechanics by (118k points)
Calculate the wetted perimeter for a rectangular channel having top width of 4.5m and depth of 3m.

(a) 12m

(b) 10.5m

(c) 7.5m

(d) 15m

This question was addressed to me in homework.

Question is taken from Geometrical Properties of Rectangular Section topic in section Flow in Open Channels of Fluid Mechanics

1 Answer

+2 votes
by (362k points)
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Best answer
Correct answer is (b) 10.5m

To explain I would say: Wetted Perimeter = Width + 2(Depth)

= 4.5 + 2(3)

= 10.5m.

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