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'Weekly Problem 52 - 2006' printed from http://nrich.maths.org/

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A square is divided into four congruent rectangles and a smaller square, as shown. (The diagram is not to scale.)

Square divided into four congruent rectangles and a smaller square

The area of the small square is 1/4 of the area of the whole square. What is the ratio of the length of a short side of one of the rectangles to the length of a long side?
 
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This problem is taken from the UKMT Mathematical Challenges.

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