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5,762,209,000 square perches is about 1,500,000 times as big as Alcatraz
In other words, the size of Alcatraz is 0.000000630 times that amount.
(a.k.a. The Rock) (California)
Alcatraz Island measures 3,500 square perches. It is known a part of the Golden Gate National Recreation Area, and has historically served as a lighthouse, fort, military prison, and — most famously — a federal prison.
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