If and are external and internal diameters of a circular shaft respectively, its polar moment of inertia, is________________?

If and are external and internal diameters of a circular shaft respect

1.	If and are external and internal diameters of a circular shaft respectively, its polar moment of inertia, is________________?
A.	D4 – d4)
B.	D4 – d4)
C.	D4 – d4)
D.	D4 – d4)
Answer» E.

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If and are external and internal diameters of a circular shaft respectively, its polar moment of inertia, is________________?

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