The distance of a planet from the Sun is related to its period of revolution by Kepler's Third Law, which states that the square of a planet's orbital period (T) is directly proportional to the cube of its average distance from the Sun (r):

$$T^2=Kr^3$$

Where K is the constant of proportionality.

This means that as the distance of a planet from the Sun increases, its orbital period also increases. For example, Mercury, which is the closest planet to the Sun, has the shortest orbital period of about 88 Earth days, while Neptune, which is the farthest planet from the Sun, has the longest orbital period of about 165 years.

Kepler's Third Law can also be used to determine the relative distances of planets from the Sun. For example, if we know the orbital period of a planet, we can calculate its average distance from the Sun by using the formula:

$$r=(T^2/K)^{1/3}$$

This formula can be used to compare the distances of different planets from the Sun and to understand the overall structure of the Solar System.