How do I calculate the height of a circle with a offset on the x axis
Given the image:<br>
![Circle height illustration][1]

"Distance Y" is equal to 2x radius of the circle, but if I have a "Distance X" offset then how do I calculate "Distance Y"? I will always know the "Distance X" offset and the radius of the circle, is that enough information to calculate "Distance Y" and how do I do it?

Thank you<br>
Søren

  [1]: http://i.stack.imgur.com/Ebg7a.png
How do I calculate the height of a circle with a offset on the x axis
===

Given the image:<br>
![Circle height illustration][1]

"Distance Y" is equal to 2x radius of the circle, but if I have a "Distance X" offset then how do I calculate "Distance Y"? I will always know the "Distance X" offset and the radius of the circle, is that enough information to calculate "Distance Y" and how do I do it?

Thank you<br>
Søren

  [1]: http://i.stack.imgur.com/Ebg7a.png