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## Homework Statement

I'm just trying to rearrange a few equations for gravity, period, radius etc., and am a tad confused.

## Homework Equations

(G*M)/R^2 = (4*pi^2*R)/T^2

Want to rearrange for T and R. :)

## The Attempt at a Solution

I got T to a point of...

T^2 = (4*pi^2*R)*(R^2)/GM

I

*think*that's right, but I'm sure it can be further simplified.

Any halp? :)