document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1093825>Question 1093825</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the minimum amount of fencing needed to construct a rectangular enclosure containing 1800 square feet using a river as a natural boundary on one side? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #708443 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=708443\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the minimum amount of fencing needed to construct a rectangular enclosure containing 1800 square feet using a river as a natural boundary on one side? <BR>\n" );
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document.write( "let L = the length<BR>\n" );
document.write( "let w = the width<BR>\n" );
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document.write( "Area<BR>\n" );
document.write( "L * w = 1800<BR>\n" );
document.write( "L = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1800%2Fw ALIGN=MIDDLE  ALT=\"1800%2Fw\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "perimeter (p), only 3 sides of fence required, therefore<BR>\n" );
document.write( "p = L + 2w<BR>\n" );
document.write( "Replace L with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1800%2Fw ALIGN=MIDDLE  ALT=\"1800%2Fw\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "p(w) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1800%2Fw ALIGN=MIDDLE  ALT=\"1800%2Fw\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 2w <BR>\n" );
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document.write( "Plot this equation <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-50%2C+150%2C+-50%2C+200%2C+%281800%2Fx%29%2B2x%2C+120%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-50%2C+150%2C+-50%2C+200%2C+%281800%2Fx%29%2B2x%2C+120%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "minimum fencing occurs when w = 30, then L = 1800/60 = 60<BR>\n" );
document.write( "therefore min fencing is 120 (green line). 60 + 2(30) </SPAN>\n" );
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