The proportional depth of a circular sewer running partially half is __________
(a) (1-cosK/2)
(b) (1/2) * (1-sinK/2)
(c) (1/2) * (1-cosK/2)
(d) (1-cosK/2)^2
This question was posed to me during an online interview.
My query is from Hydraulic Elements of Circular Sewers topic in portion Hydraulic Design of Sewers of Environmental Engineering