Did you know?
Height of a typical Hot Air Balloon (24 m) is about as big as Length of a tennis court (23.77 m)
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Land Area of Cuba (110,900 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.