1. The problem statement, all variables and given/known data A 15 kg satellite has a circular orbit with a period of 4.4 h and a radius of 3.5 × 106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 1.2 m/s2, what is the radius of the planet? 2. Relevant equations 3. The attempt at a solution I think im on the right track, but im stuck finding the radius of the planet. in my equation at the bottom for radius what would i use for M and m?