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0.3160 miles is about one-twenty-five-thousandth as long as The Diameter of Earth.
In other words, it's 0.0000398668710 times the length of The Diameter of Earth, and the length of The Diameter of Earth is 25,083.4830 times that amount.
(Equatorial)
The Earth — not a perfect sphere, but rather an oblate spheroid with bulged middle — has a diameter of approximately 7,926.38060 miles 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 65 miles.
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