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Length of the Copacabana beach in Rio de Janeiro (4 km) is 2 x Length of the Kentucky Derby horse race (2 km)
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Land Area of Hungary (93,000 km^2)
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.