What is a Coefficient?Immersive Reader
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Given:
Center of a circle is (3,9).
Solution point is (-2,21).
To find:
The standard form of the circle.
Solution:
Radius is the distance between center (3,9) and the solution point (-2,21).
On further simplification, we get
The radius of the circle is 13 units.
The standard form of a circle is
Where, (h,k) is the center and r is the radius.
Putting h=3, k=9 and r=13, we get
Therefore, the standard form of the circle is .