document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=821251>Question 821251</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the area of a circle is equal to the area of a rectangle of 12m*6m, find its circumference??? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #493975 by </B><A HREF=/tutors/aboutme.mpl?userid=LinnW><B>LinnW(1048)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=LinnW><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=LinnW><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=493975\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> C=(pi)(2r)<BR>\n" );
document.write( "A=(pi)r^2\r<BR>\n" );
document.write( "\n" );
document.write( "Solve for r in the second equation.<BR>\n" );
document.write( "A/(pi) = r^2<BR>\n" );
document.write( "Take square root of each side.<BR>\n" );
document.write( "sqrt( A/(pi) ) = r<BR>\n" );
document.write( "Substituting in C=(pi)(2r) we have<BR>\n" );
document.write( "C=(pi)(2( sqrt( A/(pi) ) )) or<BR>\n" );
document.write( "C=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28pi%29%282%28+sqrt%28+A%2F%28pi%29+%29+%29%29 ALIGN=MIDDLE  ALT=\"%28pi%29%282%28+sqrt%28+A%2F%28pi%29+%29+%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "A in the equation for our problem is l x w = 12*6 = 72<BR>\n" );
document.write( "so<BR>\n" );
document.write( "C=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28pi%29%282%28+sqrt%28+72%2F%28pi%29+%29+%29%29 ALIGN=MIDDLE  ALT=\"%28pi%29%282%28+sqrt%28+72%2F%28pi%29+%29+%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28pi%29%282%2A6%28+sqrt%28+2%2F%28pi%29+%29+%29%29 ALIGN=MIDDLE  ALT=\"%28pi%29%282%2A6%28+sqrt%28+2%2F%28pi%29+%29+%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28pi%29%2812%28+sqrt%28+2%2F%28pi%29+%29+%29%29 ALIGN=MIDDLE  ALT=\"%28pi%29%2812%28+sqrt%28+2%2F%28pi%29+%29+%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );