If the straight sides of a triangular section of a lined canal with ci – McqOptions

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1.	If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle ≈í‚àè with horizontal, the perimeter of the canal is$?
A.	R (≈í‚àè + tan ≈í‚àè)
B.	2R (≈í‚àè + tan ≈í‚àè)
C.	R (≈í‚àè + cos ≈í‚àè)
D.	2R (≈í‚àè + cos ≈í‚àè)
Answer» E.

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