1. The problem statement, all variables and given/known data Using a development similar to Kepler's law of periods for planets orbiting the Sun, find the required altitude of geosynchronous satellites above the earth. 2. Relevant equations (R^3)/T^2=(G*M)/(4pi^2) 3. The attempt at a solution I'm honestly not even sure where to start. The correct answer is supposed to be 3.59*10^7m above the surface.