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Length of the Argentina-Chile border (5,150 km) is 2 x Length of the Zambezi River (2,574 km)
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Circumference of the dwarf planet Ceres (2,992 km)
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.