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Congruent Rectangles

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Author: Annie Fetter
Description: teacher support active problem Geometry, difficulty level 1. Seven congruent rectangles are arranged to form a larger rectangle. If the area of the large rectangle is 756 units^2, what's the perimeter of the large rectangle?
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Problem page: http://mathforum.org/librarypow/puzzles/index2.ehtml?puzzle=2703
Support page: http://mathforum.org/pow/support/geopow/rectangles.teacher.html
Solution page: Problem #2703

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