Volume Confusions

Hello,

I am trying to find out the volume of my part but the answer does not make sense. This is a CT Scan of an actual dog's humerus, and there is no way it is less than 1 cubic inch. I must really be missing something.

Is there another way to see the volume? Have I gone about this the wrong way? Or, did I do something that messed up the part?

Thank you in advance,

Claudia Smith

SolidworksParts And Features