1. The problem statement, all variables and given/known data A rectangular block of ice containing a fossil measures 426mm x 264mm x 153mm with a total mass of 21.8kg Density of ice = 0.917g/cm3 Density of Fossil = 3.64g/cm3 What percentage of the block's mass is the fossil? 2. Relevant equations Density = Mass/Volume Mass = Density x Volume Volume = Mass/Density 3. The attempt at a solution Now I calculated the volume 17206992 but I thought that was too big so I changed the measurements to cm = 42.6cm x 26.4 x 15.3 V= 17207cm3 Now this is were it gets a bit hairy I calculate the Mass M = Density x Volume = 0.917g/cm3 x 17207cm3 = 15778.81g = 15.77kg (ICE) M = Density x Volume = 3.64g/cm3 x 17207cm3 = 62633.48g = 62.63kg (FOSSIL) What have I done wrong here? I am not sure of the correct steps?