Algebra.Com's Answer #845316 by ikleyn(52781)![\"\"](\"/images/stars/stars-13.gif\")  
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document.write( "A contractor orders 8 cubic yards of premixed cement, all of which is to be used
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document.write( "to pour a patio that will be 4 inches thick. If the length of the patio is specified
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document.write( "to be twice the width, what will be the patio dimensions? (1 cubic yard 27 cubic feet)
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document.write( "The volume of 8 cubic yards is 8*27 cubic feet, or  cubic inches.\r\n" );
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document.write( "The area covered by the premixed cement is the volume divided by thickness, or\r\n" );
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document.write( "  = 2*27 = 93312 square inches.\r\n" );
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document.write( "If the width is W, then the length is 2W, according to the problem.\r\n" );
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document.write( "So, the area equation is\r\n" );
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document.write( " W * (2W) = 93312 square inches, or\r\n" );
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document.write( " 2W^2 = 93312 \r\n" );
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document.write( " W^2 = 93312/2 = 46656\r\n" );
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document.write( " W =  = 216 inches = 18 feet.\r\n" );
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document.write( "ANSWER. The dimensions are 18 feet (the width) by 2*18 = 36 feet (the length).\r\n" );
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document.write( "Solved, with full explanations.\r
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