59,778
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10,424.8 square miles.
About one fifth of the earth's land is Tundra, as the Earth has about 57.5 million square miles (149 million sq kms) of land. This is around 11.5 million sq miles (29.8 million sq kms).
11265.408 kms
2 kms = 200,000 centimetres
29.783 kms = 18.506 mps = 66623 mph