1. The problem statement, all variables and given/known data The L-shaped tank shown in Fig. 14-33 is filled with water and is open at the top. If d = 3.24 m, what is the force due to the water (a) on face A and (b) on face B? IMAGE: http://edugen.wiley.com/edugen/courses/crs1650/art/qb/qu/c14/fig14_33.gif 2. Relevant equations i know that F=PA (where P is pressure and A is surface area) P-Pi= ρgh (where ρ is desnity and Pi is initial atmospheric pressure) 3. The attempt at a solution Other than those formulas, i don't know what else i need. But i can't see how i have enough information to use those formulas. I don't know how i would calculate initial atmospheric pressure or desnity without them being given.