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Is 137 square miles as big as The Pentagon?

It's about 2,500 times as big as The Pentagon
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The size of The Pentagon is about 0.0533 square miles.
(a.k.a. United States Department of Defense Headquarters) (Washington, D.C.) (total floor area)
The Pentagon, the world's largest office building, contains a total floor area of 0.0533 square miles. Built during World War II, the designers compensated for the steel rations then in effect by using 310,000 cu. m of concrete in the construction efforts.
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