Estimate the wetted perimeter of a circular channel having radius R a – McqOptions

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1.	Estimate the wetted perimeter of a circular channel having radius R and depth d, if the angle subtended at the centre is Ɵ.
A.	RƟ⁄2
B.	RƟ
C.	2RƟ
D.	3RƟ
Answer» D. 3RƟ

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