Correction for the size of London
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How big is 0.0000000280 square perches?
It's about 0.0000000000000005 times as big as London
The size of London is about 62,430,000 square perches.
(a.k.a. Greater London) (London Region) (England, United Kingdom)
London, one of the most important global cities in the world, currently occupies a total area of 62,430,000 square perches. For more than one hundred years, between the nineteenth and twentieth centuries, it was the largest city in the world by population.