1. The problem statement, all variables and given/known data 2. Relevant equations fluid pressure = fluid density * depth * g 3. The attempt at a solution My understanding is that fluid pressure at any two points at the same depth is equal, for a fluid at rest. But because one end is open, the pressure at point C is less than B and equal to A? I don't understand intuitively how this works. Any help would be appreciated - thanks!