Estimate the wetted perimeter of a circular channel having radius R an – 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 ‚Äö√†√ú‚àö¬∫.
A.	<sup>R‚Äö√†√ú‚àö¬∫</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>2</sub>
B.	R‚Äö√†√ú‚àö¬∫
C.	2R‚Äö√†√ú‚àö¬∫
D.	3R‚Äö√†√ú‚àö¬∫
Answer» D. 3R‚Äö√†√ú‚àö¬∫

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