The equation defines a circle in the xy ‑plane. What is the radius of the circle?

Question

The equation defines a circle in the xy &#8209;plane. What is the radius of the circle?

Accepted Answer

The correct answer is 11. A circle with equation , where a , b, and r are constants, has center and radius r . Therefore, the radius of the given circle is , or 11.

Question the-eq