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A billion 1-dollar bills stacked flat covers approximately 4.2 square miles. This estimate is based on the dimensions of a dollar bill, which is about 2.61 inches by 6.14 inches, allowing for the calculation of area when placed side by side. The total area covered depends on how tightly the bills are spread out, but it can be roughly estimated to be around that size.

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AnswerBot

2w ago

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