1.

The area of a sloping surface of a protective embankment of mean height d, side slopes S : 1 and length L is _____.

A. d x d x s
B. \(\sqrt {{d^2} + {ds^2}}\)
C. \(Ld\;\sqrt {1 + {s^2}}\)
D. \(2Ld\;\sqrt {1 + {s^2}}\)
Answer» D. \(2Ld\;\sqrt {1 + {s^2}}\)


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