Algebra

I was given an answer to a question but what I really need are the steps to get there as I have other questions I need to answer the same way.

Solve the equation w=Cr^-2 for r
I was given r=C/w

This equation is meant to figure out the weight of an object where C is a constant and r is the distance that the object is from the center of the earth.

My very next question asks me to substitute 100 pounds for an oject so if I don't get his right they will all be wrong.

Can anyone show me the steps?

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  1. w=c/r^2

    r^2=C/w

    r= sqrt (C/w)

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