document.write( "Question 577927: what is the outer perimeter of a sidewalk if the sidewalk is 12 ft wide by 20 ft long ? \n" ); document.write( "
Algebra.Com's Answer #370408 by jim_thompson5910(35256)\"\" \"About 
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P = 2L + 2W\r
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\n" ); document.write( "\n" ); document.write( "P = 2(20) + 2(12)\r
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\n" ); document.write( "\n" ); document.write( "P = 40 + 24\r
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\n" ); document.write( "\n" ); document.write( "P = 64\r
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\n" ); document.write( "\n" ); document.write( "So the outer perimeter is 64 ft.
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