SOLUTION: 4x^2+4y^2= 81 determine the center and radius of the circle

Question 260136: 4x^2+4y^2= 81
determine the center and radius of the circle
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Given:
determine the center and the radius.
Let's first get your equation into the standard form for a circle:
where the center is at (h, k) and the radius is r.
Divide both sides by 4.
This is now in standard form, so h = 0, k = 0, and and
The center is at (0, 0) and the radius is r = 4.5
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