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What is the center and radius of a circle if the given equation is x2 + (y - 4)2 = 121?


Sagot :

Centre (0,0)
R=11

Explanation:
The standard equation of a circle centre (a,b) and radius r


(x-a)2 +(y-b)2 =r2

For

x2 +y2=121

The centre is (0,0)

Rediusr= √121=11