SOLUTION: find the circumference of a circle whose equation is given by (x-9)^2 + (y+11)^2 =169

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Question 492446: find the circumference of a circle whose equation is given by (x-9)^2 + (y+11)^2 =169
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
The radius is sqrt(169), or 13, so the circumference is 2*13*pi = 26pi.