A certain circle in the xy-plane has its center at the origin. If P is a point on the circle, what is the sum of the

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A certain circle in the xy-plane has its center at the origin. If P is a point on the circle, what is the sum of the squares of the coordinates of P?

1) The radius of the circle is 4.

2) The sum of the coordinates of P is 0.


OA A

Source: GMAT Prep