My question is regarding finding volume and densities of spheres. I'm getting strange results, so I thought I'd find out where my methods are incorrect. I am using a graduated cylinder to drop the spheres into with water inside. I measured the initial volume of the water before I dropped the sphere in. Then I measured it after. I now have the mass, the initial volume (ml) of water, and the final volume of water (along with the uncertainties, using hi-low method ). Should I use the formula: Linear Mass Density = Mass/Liter? Thanks for helping.