1. The problem statement, all variables and given/known data A river car ferry boat has a uniform cross sectional area in the region of the water line of 720m^2. If sixteen cars of average mass 1100kg are driven on board, find the extra depth to which the boat will sink into the water. 2. Relevant equations Density= m/V Density= m/Area X Depth 3. The attempt at a solution How do I start without volume given?