document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=280958>Question 280958</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i must find the dimension of a rectangle a with the greatest area whose perimeter is 30 ft. is the answer 10 by 5 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #204128 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=204128\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> i must find the dimension of a rectangle a with the greatest area whose perimeter is 30 ft. is the answer 10 by 5<BR>\n" );
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document.write( "Area = length*width OR LW<BR>\n" );
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document.write( "Perimeter = 2(L+W)<BR>\n" );
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document.write( "Your Problem:<BR>\n" );
document.write( "30 = 2(L+W)<BR>\n" );
document.write( "15 = L+W<BR>\n" );
document.write( "W = 15-L<BR>\n" );
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document.write( "Area = LW<BR>\n" );
document.write( "A = L(15-L)<BR>\n" );
document.write( "A = 15L-L^2<BR>\n" );
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document.write( "This is a quadratic equation with a = -1 and b = 15<BR>\n" );
document.write( "The Maximum area occurs when L = -b/2a = -15/(-2) = 7.5<BR>\n" );
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document.write( "Answer: Length = 7.5 ft and Width = 7.5 ft.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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