The area of a sphere of diameter d is simply Pi x d2 . The diameter of the earth is 8000 miles (I know this is not exact, and that the earth is not perfectly spherical, but if you really need it more accurately you can look it up in Wikipedia)
So area of earth's surface is 3.142 x 8000 x 8000 = 201.1 x 106 sq miles
(106 is a short way of writing 1 million)
Sorry, got km instead of miles first time
fifteenth
Chuck Norris.
Argentina has a total area of approximately 2.78 million square kilometers, making it the 8th largest country in the world by land area.
Asia - The world's largest continent with a total area of 44,579,000 km2
The total surface area of Earth is approximately 510 million square kilometers.
The total area of Mali is 478,839 square miles. It is ranked 24th in total area of all sovereign countries in the world.
USA is in 4th position after Russia, China and Canada in terms of area.
Australia's total land area is approximately 7.7 million square kilometers, making it the sixth-largest country in the world.
The biggest island in the world is Greenland, with a total area of approximately 2,166,086 square kilometers.
The total area of the subcontinent of India is 1,269,000 square miles. It is the seventh largest country in the world.
Closer to 30% according to one online source.
The total area of the United States is approximately 9.8 million square kilometers. This makes it the third largest country in the world by total area.