Manhattan
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Very large - it is 4,687.5 square miles.
Easter Island.
rhode island with a pop. per sq. mile of 1,006 inhabitants vs North Dakota's 9.916 inhabitants per square mile
One square kilometer is 0.386102 square miles. Therefore, 2.8 million sq km = 2,800,000 x 0.386102 = 1,081,085.6 square miles.
one acre is 43,560 square feet. So, one million acres would be 43,560,000,000 square feet.