If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the perimeter of the canal is

1.

If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the perimeter of the canal is

[A].	R(θ + tan θ)
[B].	2R(θ + tan θ)
[C].	R(θ + cos θ)
[D].	2R(θ + cos θ)
[E].	none of these.

Answer: Option D

Explanation:

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