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Question
If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the area of its cross-section, is
Options:
A .  R (θ + tan θ)
B .  R (θ + cot θ)
C .  R2 (θ + tan θ)
D .  R2 (θ + cot θ)
Answer: Option D

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