Posted by **avincent** on Wednesday, February 27, 2008 at 12:25pm.

first was w=Cr^-2

solve for r

I came up with r=sqrt of C/w

Now I have imputed numbers that were provided to come up with the equation 3,963=sqrt c/100

I squared both sides to come up with 15,705,369=c/100

Now I am stuck. Trying to solve for C. Am I on the right track?

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