### Finding the Height of a geostationary satellite...

As with the finding the period of a GPS satellite, the most efficient way to do this is to find a relationship between orbit radius and orbit period. Step through the frames of this
hint movie to get an idea how you might proceed.

Once you have computed the radius r of the geostationary orbit, you can get its altitude h.

Don't forget that r and h are *not* the same.