Here are some of the basic physical attributes of the Earth (1). Radius: 6371 km (mean), 6378.1 km at equator, 6356.8 at the poles. Total Surface Area = 4π r2 = 510,064,041 km2 148,940,000 km2 of land (29.2% of the surface) 361,132,000 km2 of water (70.8% of the surface) Aphelion: 152,097,701 km (farthest from the sun in its orbit) Perihelion: 147,597,887 km (closest to the sun in its orbit)
Basic physical attributes of the earth.
