Final answer:
The asteroid belt is located between 2.2 to 3.3 AU from the Sun; however, an asteroid with an orbital period of 8 years may not be in the main belt and requires Kepler's Third Law to determine its distance.
Step-by-step explanation:
The approximate distance from the Sun to the asteroid belt can be answered using astronomical units (AU), which is the standard measure of distance in the solar system. The asteroid belt lies between the orbits of Mars and Jupiter, where orbits are generally most stable from approximately 2.2 to 3.3 AU from the Sun. Since you've asked for the distance of an asteroid with an orbital period of 8 years, we would need to use Kepler's Third Law to calculate its semi-major axis; however, this period is longer than the typical range for asteroids in the main belt, suggesting that the asteroid in question would likely be outside the main belt. Without Kepler's Third Law, we cannot provide an exact distance without additional information.