document.write( "Question 521173: Please help me solve this problem: A window is 21 inches wide, and it's perimeter is 112 inches. What is the length of the window? \n" ); document.write( "
Algebra.Com's Answer #346367 by geometryworm7271(30)\"\" \"About 
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the formula for perimeter is 2w+2l so if w=21 2w=42 and 112-42=70 so 2l=70 and l=35
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