The approximate total surface area of Earth is 5.1x10^8 km2. All the salt water on Earth has an approximate surface area of 352,000,000 km2. All the freshwater on Earth has an approximate surface area of 9x10^6 km2
How much of Earth's surface is covered by water, including bolt, salt, and fresh water? Write your answer In scientific notation
To find the total surface area covered by water, including both saltwater and freshwater, we can simply add the surface areas of the two.
Total surface area covered by water = Surface area of saltwater + Surface area of freshwater
= 352,000,000 km² + 9x10^6 km²
= (3.52x10^8 + 9x10^6) km²
= 3.61x10^8 km²
Therefore, approximately 3.61 x 10^8 km² of Earth's surface is covered by water.
Note: "bolt" in the question seems to be a typo; assuming it is meant to be "both" instead.