If an annulus has an inner diameter of d 1 and an outer diameter of d – McqOptions

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1.	If an annulus has an inner diameter of d 1 and an outer diameter of d 2 then the equivalent diameter is
A.	2 d 2 – d 1
B.	d 2 – 2 d 1
C.	d 1 – d 2
D.	d 2 – d 1
Answer» E.

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