Volume calculations

 From:  BurrMan
4945.1 
A bit off of MoI, but was looking for experience here...

Can anyone help point me towards volume+weight calculations for end-material weights? Or will it be more complex?

I would like to create a solid, then get it's volume properties from something like Rhino, then know what that volume of say "Lead" would weigh.

Will it be a simple "Volume+Function with lead properties"= final weight? Or is it more complex than an answer here.

Thanks.