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Length of an American Football field (110 m) is 10 x Penalty distance in (soccer) football (10.97 m)
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Forest in Venezuela (2011) (475,000 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.