Correction for the size of Alcatraz
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How big is 62,000,000 square inches?
It's about half as big as Alcatraz
The size of Alcatraz is about 140,000,000 square inches.
(a.k.a. The Rock) (California)
Alcatraz Island measures 140,000,000 square inches. 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.