document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=245998>Question 245998</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A carpenter is building a rectangular room with a fixed perimeter of 240 ft. What dimensions would yeild the maximum area? what is the maximum area?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #179683 by </B><A HREF=/tutors/aboutme.mpl?userid=ripplemehta><B>ripplemehta(3)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ripplemehta><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=ripplemehta><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=179683\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> perimeter of the rectangulatr room=240ft<BR>\n" );
document.write( "perimeter of a rectangle=2*(l+b)<BR>\n" );
document.write( "so 240=2*(l+b)so <BR>\n" );
document.write( "l+b=120<BR>\n" );
document.write( "so if l=x<BR>\n" );
document.write( "b=120-x<BR>\n" );
document.write( "area=x*(120-x)<BR>\n" );
document.write( "A=x(120-x)<BR>\n" );
document.write( "for maximum A dA/dx=0<BR>\n" );
document.write( "dA/dx=d/dx(120x-x^2)<BR>\n" );
document.write( "0=120-2x<BR>\n" );
document.write( "x=60ft<BR>\n" );
document.write( "length=60ft<BR>\n" );
document.write( "breadth=120-60=60ft answer </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );