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mathssydney
13 units... it's actually right triangle with sides 5 and 12, you just need to find hypotenuse 
SweetyPie12

Answer: 13 units.

Step-by-step explanation: A circle has its center at the origin, and the point of the circle is (5, -12).  Then we have to calculate the length of its radius formula to find the length between the two points.