1. The problem statement, all variables and given/known data A solid cylinder 350mm in diametre and of total length 750mm floats upright in fresh water to a depth of 500mm determine (a) the mass of the cylinder.(b)the density of the material in the cylinder. 2. Relevant equations mg=pgha 3. The attempt at a solution area= lxd = 0.75x0.35=0.262m m=pfa as the gravity cancels out m = 1000x0.5x0.262=131kg it is question b i am struggling with as i have tried rearranging the formula for annother question which i have the answers for and i cannot get the same answer please help!