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Direct distance from Cape Town to Cairo (7,250 km) is 2 x Length of the Volga River in Russia (3,640 km)
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Pop. of Mumbai, India (12.48 million people)
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.