A tank of water sits at the edge of a table of height 2.5 m. The tank springs a very small leak at its base, and water sprays out a distance of 0.6 m from the edge of the table. What is the water level h in the tank? (Assume the tank is open to the air at the top.)

If I remember my fluid mechanics, there is a formula for this.

x=\sqrt{4h(h_{0}-h)}

Where x=0.6, h=2.5, and h_0 is what needs to be found.