Force on swimming pool bottom and short sides from water pressure

[whereisccguys]

A swimming pool has dimension 23.0 m by 8.0 m with a depth of 3.0 m. When it is filled with water, what is the force (resulting from the water alone) on the bottom?

When it is filled with water, what is the force (resulting from the water alone) on each short side?

i figured out part a already by finding the weight of the water in the swimming pool and multiplying it by gravity (which gave me 5.41E+06 N) but i cannot figure out part b... am i suppose to use the formula
Pressure = F/A?? (i tried with serveral different numbers and still got the wrong answer)

 

[Cyrus]

$$F=\rho g A d$$