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Irrigation
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
R(θ + tan θ)
R(θ + cot θ)
R2(θ + tan θ)
R2(θ + cot θ)
R(θ + tan θ)
Correct Answer:
R2(θ + cot θ)
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