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Mathematics 16 Online
OpenStudy (gabrielv579):

A circle has its center at the origin, and (5, -12) is a point on the circle. How long is the radius of the circle? 5 12 13

OpenStudy (phi):

do you know how to find the distance between two points ? in this case, between (0,0) and (5, -12) using the "distance formula"?

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