An artificial satellite is in a circular orbit around a planet of radius r = 4.45 103 km at a distance d = 600.0 km from the planet\'s surface.

An artificial satellite is in a circular orbit around a planet of radius r = 4.45 × 103 km at a distance d = 600.0 km from the planet's surface. The period of revolution of the satellite around the planet is T = 2.65 hours. What is the average density of the planet?