Question

translate the answer, t2 = a3, into words: the of the orbital period, t, of a planet is equal to the of the average distance, a, of the planet from the sun.

Explanation:

Kepler's third - law of planetary motion states that the square of the orbital period of a planet is proportional to the cube of the average distance of the planet from the Sun.

Answer:

The square of the orbital period of a planet is equal to the cube of the average distance of the planet from the Sun.