Correction for the size of Alcatraz
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How big is 22.01 square feet?
It's about one-forty-five-thousandth as big as Alcatraz
The size of Alcatraz is about 960,000 square feet.
(a.k.a. The Rock) (California)
Alcatraz Island measures 960,000 square feet. 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.