SOLUTION: the equation for a circle is x^2+y^2=169 what is the radius

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: the equation for a circle is x^2+y^2=169 what is the radius      Log On


   

Question 728152: the equation for a circle is x^2+y^2=169 what is the radius
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
the equation for a circle is x^2+y^2=169 what is the radius
-------------------
It's x^2 + y^2 = r^2
r^2 = 169
r = 13