I'd like to calculate the height of a segment based on the area. I have the radius of the circle, the area of the segment and need to calculate the height of the segment.
I found the following formula at the following address but lack the mathematic ability to turn the equation around. Any help would be much appreciated.
$$A = r^2\arccos\left(\frac{1 - h}{r}\right) - (r-h)\sqrt{2rh - h^2}$$
http://www.had2know.com/academics/area-circular-segment-formula.html