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What is the value of wetted perimeter of a circular section having radius 6m in case of maximum velocity?

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+2 votes
in Fluid Mechanics by (118k points)
What is the value of wetted perimeter of a circular section having radius 6m in case of maximum velocity?

(a) 12.47m

(b) 13.47m

(c) 14.47m

(d) 15.47m

The question was posed to me in an online quiz.

Query is from Most Economic Circular Section in portion Flow in Open Channels of Fluid Mechanics

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Best answer
Right choice is (b) 13.47m

Easiest explanation: P = 2Rθ = 2(6)(2.2460) = 13.47m.

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