Good morning. You can get that with the Open C call UF_MODL_ask_mass_props_3d. This is also wrapped for use in .Net as UFModl.AskMassProps3d.
As with most of the wrapped calls, you need to see the details in the Open C Reference Guide.
This method provides a great deal of information in a large array of values:
mass_props [ 47 ]
Mass properties  = Surface Area  = Volume (0.0 For Thin Shell)  = Mass [3-5] = Center Of Mass (COFM), WCS [6-8] = First Moments (centroidal) [9-11] = Moments Of Inertia, WCS [12-14] = Moments Of Inertia (centroidal)  = Spherical Moment Of Inertia [16-18] = Inertia Products, WCS [19-21] = Inertia Products (centroidal) [22-30] = Principal Axes, WCS [31-33] = Principal Moments (centroidal) [34-36] = Radii Of Gyration, WCS [37-39] = Radii Of Gyration (centroidal)  = Spherical Radius Of Gyration [41-45] = Unused  = Density
Note that these are relative to the WCS, rather than the absolute CSYS,which is a bit unusual in the API.