Which is the standard equation for a circle centered at the origin with radius r?A.x2 + y2 = r2B.x2 + y2 = rC.x2 = y2 + r2D.x + y = rSUBMITarrow_backPREVIOUS
Question
Which is the standard equation for a circle centered at the origin with radius r?A.x2 + y2 = r2B.x2 + y2 = rC.x2 = y2 + r2D.x + y = rSUBMITarrow_backPREVIOUS
Solution
The standard equation for a circle centered at the origin with radius r is A. x² + y² = r². This equation represents a circle where x and y are the coordinates of any point on the circle, and r is the radius of the circle.
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