Question

The circle with center (1,6) and radius 3 has equation .
(Type equation.)
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Answer 1

(x-1)^2+(y-6)^2=9

Explanation:

You use the center to get the left part of the equation and the radius to get the right.

The standard equation of a circle is

(x-h)^2+(y-k)^2=r^2

where r is the radius, and (h,k) are the coordinates of the center