To calculate the orbital period of a planet with an average distance from the sun of 3.36 AU, you can use Kepler's Third Law of Planetary Motion. This law states that the square of a planet's orbital period is proportional to the cube of its average distance from the sun. The formula for calculating the orbital period is: T^2 = a^3, where T is the orbital period in Earth years and a is the average distance from the sun in AU. In this case, a = 3.36 AU, so T^2 = (3.36)^3 = 37.97. Therefore, the orbital period T is approximately 6.16 years.