If a planet orbits the Sun at a distance of 4 AU, then its orbital period is 8 years.

Name: If a planet orbits the Sun at a distance of 4 AU, then its orbital period is 8 years.
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Quizplus · Accepted Answer

According to Kepler's third law, the square of the orbital period (in years) is proportional to the cube of the semi-major axis length (in AU). Therefore, if a planet orbits the Sun at a distance of 4 AU, its orbital period is the square root of (4^3) = 8 years.

If a Planet Orbits the Sun at a Distance of 4