SOLUTION: How would you solve the equation w = Cr^-2 for the variable r?

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Question 246081: How would you solve the equation w = Cr^-2 for the variable r?
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for r:
w+=+Cr%5E%28-2%29 Rewrite this with a positive exponent for r.
w+=+C%2Fr%5E2 Multiply both sides by r%5E2.
w%2Ar%5E2+=+C Divide both sides by w.
r%5E2+=+C%2Fw Finally, take the square root of both sides.
r+=+sqrt%28C%2Fw%29