Answer:
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Use the standard equation of a circle:
- (x - h)² + (y - k)² = r², where (h, k) is the center of the circle and r is the radius.
Since the center is at the origin, h = 0 and k = 0.
The radius is 11 units, so r = 11.
Plugging in these values, you get:
- (x - 0)² + (y - 0)² = 11²
Simplifying, the equation of the circle is: