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Puzzles

Square cross

A figure in the shape of a cross is made from five 1 x 1 squares, as shown. The cross is inscribed in a large square whose sides are parallel to the dashed square, formed by four vertices of the cross.
What is the area of the large outer square?

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If you enjoyed this puzzle, check out Sunday Afternoon Maths XXIV,
puzzles about 2d shapes, or a random puzzle.

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