document.write( "Question 1189476: In the diagram below, AEFD is a rectangle. G and H are midpoints of
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Algebra.Com's Answer #820833 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Instead of doing it for you, I'll do one exactly like yours with \r\n" );
document.write( "different numbers, so you can follow it step by step:\r\n" );
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document.write( "In the diagram below, AEFD is a rectangle. G and H are midpoints of\r\n" );
document.write( "Line EK and Line FK respectively, and K is the midpoint of Line AD. \r\n" );
document.write( "If the area of the indicated lower region is 51 cm^2, what is y, in \r\n" );
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document.write( "The figure GEFH is a trapezoid, and the area is given by the formula\r\n" );
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document.write( "    \"A\"\"%22%22=%22%22\"\"expr%281%2F2%29%28b%5B1%5D%2Bb%5B2%5D%29h\"\r\n" );
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document.write( "GH is the midline of the triangle KEF, so it is half EF, \r\n" );
document.write( "or 10 cm., where the b's are the two parallel sides and \r\n" );
document.write( "h is the height, which is half of y.\r\n" );
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document.write( "    \"51\"\"%22%22=%22%22\"\"expr%281%2F2%29%2810%5E%22%22%2B20%29%28expr%281%2F2%29y%29\"\r\n" );
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document.write( "Solve that and get \"y+=+34%2F5\" cm. or \"y=6%264%2F5\".\r\n" );
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document.write( "Edwin
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