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. 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.
To find the total surface area covered by water, we need to add the surface area of salt water and freshwater.
Surface area covered by water = surface area of salt water + surface area of freshwater
= 352,000,000 km^2 + 9x10^6 km^2
Adding these two values gives us:
= 352,000,000 + 9x10^6 km^2
Now, we can write this value in scientific notation. Since the given values are already in scientific notation, we can simply add them:
= 352,000,000 + 9x10^6 km^2
= 3.52x10^8 + 9x10^6 km^2
Therefore, the total surface area covered by water, including both salt and fresh water, is approximately 3.52x10^8 + 9x10^6 km^2.
To find the total surface area covered by water, we need to add the surface areas of saltwater and freshwater.
Total surface area covered by water = Surface area of saltwater + Surface area of freshwater
Total surface area covered by water = 352,000,000 km^2 + 9×10^6 km^2
Total surface area covered by water = 352,000,000 km^2 + (0.9×10^7) km^2
Total surface area covered by water = 352,900,000 km^2
Now, let's express this answer in scientific notation:
Total surface area covered by water = 3.529×10^8 km^2
To find the total surface area of Earth covered by water, including both salt and fresh water, we need to add the surface area of salt water and fresh water.
The surface area of salt water on Earth is given as 352,000,000 km^2.
The surface area of fresh water on Earth is given as 9×10^6 km^2.
To find the total surface area of Earth covered by water, we sum up the two values:
Total surface area = Surface area of salt water + Surface area of fresh water
Total surface area = 352,000,000 km^2 + 9×10^6 km^2
To add the two values in scientific notation, we need to convert both numbers to the same exponent.
9×10^6 km^2 = 9×10^6 × 10^0 km^2 = 9×10^6+0 km^2 = 9×10^6 km^2
Now, we can add the two values:
Total surface area = 352,000,000 km^2 + 9×10^6 km^2
= 352,009,000 km^2
So, the total surface area of Earth covered by water, including both salt and fresh water, is approximately 352,009,000 km^2 in scientific notation.