What is the wetted perimeter of a circular section of sewer?
(a) (22/7) *D^2
(b) (22/7) *D
(c) (22/7) *D^2
(d) (22/7)^2 *D
This question was posed to me during an interview for a job.
My enquiry is from Hydraulic Elements of Circular Sewers in section Hydraulic Design of Sewers of Environmental Engineering