document.write( "Question 714474: A box with an open top is constrcuted by cutting a-inch suares from the corners of a rectangular sheet of tin whose lenght is twice its width. What size sheet will produce a box having a volume of 60 cubic inches, when a = 2. \n" ); document.write( "
Algebra.Com's Answer #438807 by josgarithmetic(39669)\"\" \"About 
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The sheet in one direction is w long, and in the other direction is 2w long. A 2 inch by 2 inch corner is being removed and the flaps be turned, folded to form the open box. That means, the base of this open box will be \"w-2%2A2\" by \"2w-2%2A2\". \r
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\n" ); document.write( "\n" ); document.write( "The volume, given as 60 cubic inches, is the area of the base multiplied by how high this box is, and is given as 2 inches high, since a=2. \r
\n" ); document.write( "\n" ); document.write( "Volume, \"highlight%2860=%28w-2%2A2%29%282w-2%2A2%29%2A2%29\"
\n" ); document.write( "\"60=2%2A2%28w-4%29%28w-2%29\"
\n" ); document.write( "\"15=%28w-4%29%28w-2%29\"
\n" ); document.write( "\"15=w%5E2-6w%2B8\"
\n" ); document.write( "\"w%5E2-6w-7=0\"
\n" ); document.write( "\"highlight%28%28w-7%29%28w%2B1%29+=0%29\"\r
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\n" ); document.write( "\n" ); document.write( "The only value that makes sense is w=7 inches.
\n" ); document.write( "The sheet is 7 inches by 14 inches.
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