document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=824747>Question 824747</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The area of a circular region is numerically equal to four times the circumference of the circle. Find the length of a radius of the circle.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #496743 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=496743\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The area of a circular region is numerically equal to four times the circumference of the circle. Find the length of a radius of the circle. <BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "pi*r^2 = 4(2pi*r)<BR>\n" );
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document.write( "r^2 = 8r<BR>\n" );
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document.write( "r(r-8) = 0<BR>\n" );
document.write( "Positive solution:<BR>\n" );
document.write( "radius = 8 <BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );