document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=584498>Question 584498</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A sidewalk of uniform width surrounds a rectangular building. How wide is the sidewalk if the building is ten feet longer than wide; if the outside perimeter of the sidewalk is 192 feet, and if the area of the sidewalk is 704 square feet? Please make it a trinomial. I know the answer is 4, just not how to get there algebraically. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #372799 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=372799\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"the building is ten feet longer than wide\" ___ so the perimeter of the sidewalk will be also\r<BR>\n" );
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document.write( "2x + 2(x + 10) = 192 ___ 4x + 20 = 192 ___ x = 43, x + 10 = 53\r<BR>\n" );
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document.write( "area of building plus sidewalk ___ 43 * 53\r<BR>\n" );
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document.write( "area of sidewalk ___ 704\r<BR>\n" );
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document.write( "area of building ___ (43 - 2w)(53 - 2w) where w is the width of the sidewalk\r<BR>\n" );
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document.write( "(43 * 53) - 704 = (43 - 2w)(53 - 2w) ___ 4w^2 - 192w - (43 * 53) + 704 = 0 </SPAN>\n" );
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