document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1191079>Question 1191079</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A square plot of land is covered with cement costing $8/m^2 and a fence surrounding it costs $10/m. If the total cost is $8400, find the area of the plot </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #822834 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=822834\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A square plot of land is covered with cement costing $8/m^2 and a fence surrounding it costs $10/m. If the total cost is $8400, find the area of the plot<BR>\n" );
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document.write( "side length = s<BR>\n" );
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document.write( "Cost = 8s^2 + 4*10s = 8400<BR>\n" );
document.write( "8s^2 + 40s - 8400 = 0<BR>\n" );
document.write( "s^2 + 5s - 1050 = 0<BR>\n" );
document.write( "(s-30)*(s+35) = 0<BR>\n" );
document.write( "s = 30 meters<BR>\n" );
document.write( "Area = 900 sq meters </SPAN>\n" );
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