Respuesta :

carlosego

The standard form for the equation of a circle is :

 (x−h)^2+(y−k)^2=r2 
 where handk are the x and y coordinates of the center of the circle and r is the radius.
 Subtituting h=4, k=0 and r=4 gives :

 (x-4)^2+(y)^2=16

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