The approximate total surface area of Earth is 5.1 * 108 km2. All the salt water on Earth has an approximate surface area of 352,000,000 km2, and all the freshwater on Earth has an approximate surface area of 9 * 106 km2. How much of Earth's surface is covered by water, including both salt and fresh water? Write your answer in scientific notation.
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Home » Mathematics » The approximate total surface area of Earth is 5.1 * 108 km2. All the salt water on Earth has an approximate surface area of 352,000,000 km2, and all the freshwater on Earth has an approximate surface area of 9 * 106 km2.