The centre of gravity of a trapezoidal dam section whose top width is – McqOptions

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1.	The centre of gravity of a trapezoidal dam section whose top width is a, bottom width is band the vertical side is a, from its vertical face is
A.	(a² + ab + b²)/3 (a + b)
B.	(b² + bc + c²)/3 (b + c)
C.	(a² + ab + c²)/3 (a + c)
D.	None of these
Answer» B. (b² + bc + c²)/3 (b + c)

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