Answer
$$x^2+y^2=112$$
Work Step by Step
The center is (0,0) and the radius is $4\sqrt7$.
$$x^2+y^2=112$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.