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.-D-2R(θ + cos θ)

Question

If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle &theta; with horizontal, the perimeter of the canal is-A-R(&theta; + tan &theta;)B-2R(&theta; + tan &theta;)C-R(&theta; + cos &theta;)D-2R(&theta; + cos &theta;)E-none of these.-D-2R(&theta; + cos &theta;)

APTITUDE CRACK · Accepted Answer

D 2R(&theta; + cos &theta;) Perimetre = 2R(&Icirc;&cedil;+Cot&Icirc;&cedil;), Area = R^2(&Icirc;&cedil;+Cot&Icirc;&cedil;), Hydraulic radius = R=(A/P) = R/2.

Irrigation

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

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Irrigation

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

Solution

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