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area among rectangles - Malaysia 2010 OMK Sulung / Seniors p1

Source:

October 26, 2021
geometryRectangles

Problem Statement

In the diagram, congruent rectangles ABCDABCD and DEFGDEFG have a common vertex DD. Sides BCBC and EFEF meet at HH. Given that DA=DE=8DA = DE = 8, AB=EF=12AB = EF = 12, and BH=7BH = 7. Find the area of ABHEDABHED. https://cdn.artofproblemsolving.com/attachments/f/b/7225fa89097e7b20ea246b3aa920d2464080a5.png
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