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If the smaller, red square has an area of 800, what is the area of the large square?

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Each side of a square is divided into three equal parts by two points on it, which are connected as shown in the diagram below (that is not drawn to scale).
If the smaller, red square has an area of 800, what is the area of the large square?

Area of large square

posted Jul 1, 2017 by anonymous

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