In the figure, a square is inscribed with a regular octagon. The length of the side of this regular octagon is 2. How much larger is the area of this square than that of this regular octagon?
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数学PS
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In the figure, a square is inscribed with a regular octagon. The length of the side of this regular octagon is 2. How much larger is the area of this square than that of this regular octagon?
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正确答案: B