Fluid mechanics - pressure, area, force question

[italia458]

I have a question based on this little diagram I whipped up!

http://i.imgur.com/2sLeQ.jpg

Will the 25 PSI (generated by a pump) applied to the curved surface on the bottom of the piston exert a higher force upwards to oppose the downward force on top of the piston?

A detailed explanation would be fantastic!

Thanks!

 

[russ_watters]

You can integrate the vertical force components across the curved surface and find it equal to the flat one.