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15,135,300,000 inches is about thirty times as long as The Diameter of Earth.
In other words, it's 30.1370640 times the length of The Diameter of Earth, and the length of The Diameter of Earth is 0.033181733 times that amount.
(Equatorial)
The Earth — not a perfect sphere, but rather an oblate spheroid with bulged middle — has a diameter of approximately 502,215,470 inches 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 4,118,400 inches.
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