If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is
A. 1045 mm
B. 1065 mm
C. 1075 mm
D. 1095 mm
Answer: Option D
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d=1.094b.
b=side of square.
d=dia of crcular section.
D=1.094 * 1000 = 1094.
d=1.094b use this relation