Is 0.089 square kilometers as big as The Pentagon?
It's about two-thirds as big as The Pentagon
The size of The Pentagon is about 0.1380 square kilometers.
(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 0.1380 square kilometers. 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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