document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=350758>Question 350758</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The length of a rectangle is five times its width. <BR>\n" );
document.write( "If the area of the rectangle is  405ft, find its perimeter. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #250736 by </B><A HREF=/tutors/aboutme.mpl?userid=haileytucki><B>haileytucki(390)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=haileytucki><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=haileytucki><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=250736\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The length of a rectangle is five times its width. <BR>\n" );
document.write( "If the area of the rectangle is  405ft, find its perimeter.\r<BR>\n" );
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document.write( "l = 2w \r<BR>\n" );
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document.write( "We know the area is 405 so,<BR>\n" );
document.write( "lw = w(w) = 2w^2 = 405\r<BR>\n" );
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document.write( "5w^(2)=405\r<BR>\n" );
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document.write( "Divide each term in the equation by 5.<BR>\n" );
document.write( "(5w^(2))/(5)=(405)/(5)\r<BR>\n" );
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document.write( "Simplify the left-hand side of the equation by canceling the common factors.<BR>\n" );
document.write( "w^(2)=(405)/(5)\r<BR>\n" );
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document.write( "Now, The perimeter is the sum of the lengths of all four sides.\r<BR>\n" );
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document.write( "2L + 2W= <BR>\n" );
document.write( "18 +90= 108 perimeter\r<BR>\n" );
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document.write( "Simplify the right-hand side of the equation by simplifying each term.<BR>\n" );
document.write( "w^(2)=81\r<BR>\n" );
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document.write( "Take the square root of both sides of the equation to eliminate the exponent on the left-hand side.<BR>\n" );
document.write( "w=\~(81)\r<BR>\n" );
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document.write( "Pull all perfect square roots out from under the radical.  In this case, remove the 9 because it is a perfect square.<BR>\n" );
document.write( "w=\9\r<BR>\n" );
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document.write( "First, substitute in the + portion of the \ to find the first solution.<BR>\n" );
document.write( "w=9\r<BR>\n" );
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document.write( "So, simply, <BR>\n" );
document.write( " 9 ft is the width<BR>\n" );
document.write( "and 45 is the length (45 is the length because it is 5 times the width, which is 9)\r<BR>\n" );
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document.write( "Proof:\r<BR>\n" );
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document.write( "45*9\r<BR>\n" );
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document.write( "Multiply 45 by 9 to get 405.<BR>\n" );
document.write( "405 </SPAN>\n" );
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