1. The problem statement, all variables and given/known data Two satellites, X and Y, are placed in orbit around a planet. Satellite X has period of revolution of 3.6x10^5s and an orbital radius of 7.5x10^8m. If the orbital radius of satellite Y is 3.0x10^9m, what is the orbital period? A) 9.1x10^5s B) 1.4x10^6s C) 2.9x10^6s D) 5.2x10^7s 2. Relevant equations Kepler's third law equation: (T1/T2)^2 = (R1/R2)^2 3. The attempt at a solution For this question what I did was use Kepler's third law and the answer I got was "B". But I was wondering is this correct because satellite X it says it has a "period of revolution of 3.6x10^5s", is this the same as "orbital period"?