1. The problem statement, all variables and given/known data If a 5kg object floats in water (density=1000 kg/m3) with 20% of it's volume above the surface of the water, what is the volume of the object? 2. Relevant equations Archimedes' Principle = the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces and it acts in the upward direction at the centre of mass of the displaced fluid. density=mass/volume 3. The attempt at a solution If the weight of the object is equal to the amount of fluid displaced the I was thinking that I need to find that and then I am not sure if the volume of fluid displaced would also equal the volume of the object or not... Any pointers for this question would be greatly appreciated!