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12,756.2730 kilometers is about as long as The Diameter of Earth
In other words, the length of The Diameter of Earth is 1 times that amount.
The Earth — not a perfect sphere, but rather an oblate spheroid with bulged middle — has a diameter of approximately 12,756.2730 kilometers at the Equator. The first complete view of Earth's diameter was in a photograph taken from a V-2 rocket launched in 1946 by the United States Army, which reached an altitude of 104.607360 kilometers.
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