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Length of South America (North to South) (7,150 km) is 2.5 x Length of the Danube River (2,880 km)
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Number of games played in longest-ever tennis match between Isner and Mahut (2010) (183 )
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.