Calculate depth below the water surface

[kanga]

Homework Statement

Calculate depth below the water surface of the centre of pressure of the water pressure acting on the submerged triangular lamina.
The triangle is 2m below the surface and is shaped like this:
Hypotenuse is sqrt(13)
Other sides are 2 and 3, where the side with length 2 is parallel to water surface.

Homework Equations

Relatively new stuff and finding difficult to understand so no equations unfortunately.

The Attempt at a Solution

I'm Lost!

 

[SteamKing]

There's always a formula, and you can't make any progress on this problem unless you have one. Try the bottom of this link:

http://www.roymech.co.uk/Related/Fluids/Fluids_Hydrostatics.html