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  • Brainly User
2015-10-01T11:31:57+08:00

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Circle whose center is at the origin (0,0)

x² + y² = r² , where r is the radius of the circle

x² + y² = 49

 \sqrt{(0) ^{2}+ (0) ^{2}  }  =  \sqrt{49} 


 \sqrt{49} = 7, radius

To graph this on coordinate plane:

From origin (0,0), the intersection of x and y axes, the coordinates are:
(7,0) (-7,0) (0, 7) and (0, -7)




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