ANSWERS: 3
  • total: 510.072 million sq km land: 148.94 million sq km water: 361.132 million sq km note: 70.8% of the world's surface is water, 29.2% is land
  • Perhaps, the question should be phrased: how large is the surface of the Earth's land mass? Then it could be answered in miles or kilometers.
  • Here are the radius and circumference of the earth. Mean radius 6,371.0 km Equatorial radius 6,378.1 km Polar radius 6,356.8 km Flattening 0.0033528 Circumference 40,075.02 km 40,007.86 km (meridional) 40,041.47 km (mean) source: http://www.321answers.com/Education-Science/how-big-is-the-earth-/

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