If dp is the equivalent diameter of a non-spherical particle, V p its volume and sp its surface area, then its sphericity is ? s is defined by

If dp is the equivalent diameter of a non-spherical particle, V p its

1.	If dp is the equivalent diameter of a non-spherical particle, V p its volume and sp its surface area, then its sphericity is ? s is defined by
A.	? s = 6 V p /d p s p
B.	? s = V p /d p s p
C.	? s = 6 d p S p /V p
D.	? s = d p S p /V p
Answer» B. ? s = V p /d p s p

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If dp is the equivalent diameter of a non-spherical particle, V p its volume and sp its surface area, then its sphericity is ? s is defined by

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