In our own planet Earth, 361,419,000 square kilometre of area is covered with water and 148,647,000 square kilometre of area is covered by land. Find the approximate ratio of area covered with water to area covered by land by converting these numbers into scientific notation. Astronomical Figures The distances from the sun to each of the nine planets in our solar system varies from about 57904280 km to 5899855100 km! These distances are easier to write in shorthand: 5.79 × 107 km and 5.899 × 109 km. The distance from the sun to the star nearest to it, Proxima Centauri, is about 40233600000000 km. It would be much easier for an astronomer to write this distance as 4.023 × 1013 km. Mars, the fourth planet in our solar system, is 2.269 × 10 8 km from the sun. 15-04-2018
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12 : 5