The two open tanks have the same bottom area, A, but different shapes. When the depth, h, of a liquid in the two tanks is the same in accordance with P1 = pgh + P2 the pressure on the bottom of the two tanks will be the same. However, the weight of the liquid in each of the tanks is different. How do you account for this apparent paradox? picture: http://img296.imageshack.us/my.php?image=untitled7jl2.jpg Is it because weight of the liquid is the specific weight times the volume of the liquid, which the tank on the right has more of?