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OpenStudy (anonymous):
circle A has equation (x+5)^2+y^2=169. the diameter of circle B is one fourth as long as the diameter of circle A. What is the radius of circle B?
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OpenStudy (anonymous):
A circle has equation (x-a)^2+(y-b)^2=r^2 where r is the radius of the circle. Find the radius of A.
OpenStudy (anonymous):
i'm confused on how to do the problem @Xavier
OpenStudy (anonymous):
Well you know the radius, right?
OpenStudy (anonymous):
it would be 13? idk im really confused @Xavier
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