document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=721997>Question 721997</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A rectangle is four times as long as it is wide. If the area of the rectangle is 1600 cm squared, what are its dimensions? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #442579 by </B><A HREF=/tutors/aboutme.mpl?userid=MithrilKnights><B>MithrilKnights(8)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MithrilKnights><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=MithrilKnights><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=442579\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We let the length be 4x\r<BR>\n" );
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document.write( "Let the width be x\r<BR>\n" );
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document.write( "So, 4x*x = 1600 cm^2\r<BR>\n" );
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document.write( "So, 4x^2 = 1600\r<BR>\n" );
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document.write( "So, x^2 = 400 and x=20\r<BR>\n" );
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document.write( "Therefore, plugging them into the previous lengths we get,\r<BR>\n" );
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document.write( "4x = 80\r<BR>\n" );
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document.write( "x = 20\r<BR>\n" );
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document.write( "So the dimensions are 80 x 20.\r<BR>\n" );
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document.write( "And 80 x 20 = 1600, which works </SPAN>\n" );
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