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write the standard form of equation

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1 Answer

A circle centered at (h, k) with radius "r" is given by
(x - h)2 + (y - k)2 = r2    
~~~~~~~~~~~

Here h = 0 , k = 2, r = 2
Thus,
(x – 0)2 + (y – 2)2 = 22 
Or
x2 + (y – 2)2 = 4