Find the Center-Radius Form of the Circle Described or Graphed $( - 2,1 )$

question 200

Multiple Choice

Find the center-radius form of the circle described or graphed.
-A circle has a diameter with endpoints $( - 2,1 )$ and $( 22,11 )$ . Find the radius.

• A) \(\sqrt { 13 }\)
• B) 13
• C) \(\sqrt { 26 }\)
• D) 26

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