The radius of the circle is 2√2.

If your answer **doesn't** match ours,

- do you have the right definition for "inscribed"? Try this applet in our Math Tools library.
- did you draw a picture and label it with everything you know?
- and you did remember that tangents to a circle from the same point are equal in length?

If any of those ideas help you, you might revise your answer, and then leave a comment that tells us what you did. If you're still stuck, leave a comment that tells us where you think you need help.

If your answer **does** match ours,

- and you used two different method, which did you think was easier? Why?
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