1.

Section modulus of Hollow Circular Section having external Dia. (D) and internal Dia. (d) is

A. π(D - d)4 / 32
B. π(D4 - d4) / 36D
C. π(D4 - d4) / 32D
D. π(D - d)4 / 36
Answer» D. π(D - d)4 / 36


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