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X2+y2=16 of a circle graph

  1. Sep 2, 2010 #1
    1. The problem statement, all variables and given/known data
    how do you find the radius and center with x2+y2=16 of a circle graph

    2. Relevant equations

    3. The attempt at a solution
    I am completly stump dont even know where to start on this.
  2. jcsd
  3. Sep 2, 2010 #2


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    Homework Helper

    Do you know the standard form for the equation of a circle that has radius r?
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