The mean distance of Earth from the Sun is $149.6 \times 10^6 km$ and the mean distance of mercury from the sun is $57.9 \times 10^6 km$. The period of Earth's revolution is 1 year. What is the period of Mercury's revolution?
The Earth’s distance from the Sun is 149.6 × 106km and the period of Earth’s revolution is 1 year. Calculate the ratio of the squares of the periods to cubes of the major axis.