The earth's surface area is about 510 million square meters, of which 70.8% is ocean area and 29.2% is land area What's the sea area? What's the land area?

The earth's surface area is about 510 million square meters, of which 70.8% is ocean area and 29.2% is land area What's the sea area? What's the land area?

Method 1: 5.1 × 70.8% = 5.1 × 0.708 = 36108 square meters of sea area
5.1 × 29.2% = 5.1 × 0.292 = 148.92 million square meters of land area
Method 2: 5.1 × 70.8% = 5.1 × 0.708 = 36108 square meters of sea area
51-36108 = 148.92 million square meters of land area

What is the surface area of the earth in square kilometers?

The volume of the earth is 1.083 × 1012 cubic kilometers. The surface area of the earth is 5.11 × 108 square kilometers. The land area of the earth is 1.49 × 108 square kilometers (about 29% of the surface area of the earth)

How many square kilometers is the surface area of the earth?

The radius of the equator is 6378.245 km, and the polar radius is 6356.863 km. The ratio of the difference between the two radii and the equatorial radius is only 1 ∶ 298.3. If we make a globe with a radius of 298.3 mm according to this flattening ratio, the polar radius is only 1 mm shorter than the equatorial radius