Did you know? Mass of a packed suitcase (maximum checked-in British Airways) (23 kg) is 400 x Mass of a regulation tennis ball (57 g)
Land Area of Netherlands (33,900 km^2)
/fact/land-area-of-netherlands
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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.