document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=863007>Question 863007</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The length of a rectangle is three times its width. <BR>\n" );
document.write( "If the area of the rectangle is 300 cm squared, 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 #520152 by </B><A HREF=/tutors/aboutme.mpl?userid=JulietG><B>JulietG(1812)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=JulietG><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=JulietG><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=520152\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> L = 3W [The length of a rectangle is three times its width. ]<BR>\n" );
document.write( "L * W = 300 (Area = length * width)<BR>\n" );
document.write( "Substitute the known value of L into the equation.<BR>\n" );
document.write( "(3w) * w = 300<BR>\n" );
document.write( "3w^2 = 300<BR>\n" );
document.write( "Divide each side by 3<BR>\n" );
document.write( "w^2 = 100<BR>\n" );
document.write( "Take the square root of each side<BR>\n" );
document.write( "w = 10<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let's check the answer.<BR>\n" );
document.write( "If the width is 10, then the length is 3x that, or 30.<BR>\n" );
document.write( "30 * 10 = 300<BR>\n" );
document.write( "Success! </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );