document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=319932>Question 319932</A>: <I><SPAN STYLE=\"word-break: break-all;\">  What is the circumference of a circle if the area is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=81pi ALIGN=MIDDLE  ALT=\"81pi\"   DISABLED_style= \"max-width:90%; height:auto;\" >? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #229134 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=229134\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the circumference of a circle if the area is 81pi<BR>\n" );
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document.write( "Area = pi*r^2<BR>\n" );
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document.write( "Solve for \"r\":<BR>\n" );
document.write( "pi*r^2 = 81pi<BR>\n" );
document.write( "r^2 = 81<BR>\n" );
document.write( "r = 9<BR>\n" );
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document.write( "Circumference = 2*pi*r<BR>\n" );
document.write( "C = 2*pi*9<BR>\n" );
document.write( "C = 18*pi<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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