SOLUTION: What is the circumference of the circle whose equation is given: x^2 + y^2 = 9

Algebra ->  Circles -> SOLUTION: What is the circumference of the circle whose equation is given: x^2 + y^2 = 9      Log On


   

Question 539405: What is the circumference of the circle whose equation is given: x^2 + y^2 = 9
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
That's +x%5E2+%2B+y%5E2+=+3%5E2, the equation of a circle of radius 3. It's centered at (0,0), but that does not matter.
circumference+=+2%2Api%2Aradius