document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=236330>Question 236330</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a radius of a certain circle is tripled, with 8.2 centimeters then added,<BR>\n" );
document.write( "the result is the circumference of the circle. Find the radius of the circle.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #173986 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=173986\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r = radius of the circle.\r<BR>\n" );
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document.write( "circumference of the circle = 2*pi*r\r<BR>\n" );
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document.write( "3*r + 8.2 = 2*pi*r\r<BR>\n" );
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document.write( "solve for r.\r<BR>\n" );
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document.write( "subtract 2*pi*r from both sides of the equation and subtract 8.2 from both sides of the equation to get:\r<BR>\n" );
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document.write( "3*r - 2*pi*r = -8.2\r<BR>\n" );
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document.write( "factor out the r to get:\r<BR>\n" );
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document.write( "r * (3-2*pi) = -8.2\r<BR>\n" );
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document.write( "divide both sides of the equation by (3-2*pi) to get:\r<BR>\n" );
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document.write( "r = -8.2 / (3-2*pi)\r<BR>\n" );
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document.write( "simplify to get:\r<BR>\n" );
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document.write( "r = 2.49757453\r<BR>\n" );
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document.write( "3*r + 8.2 = 156.9272359\r<BR>\n" );
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document.write( "2*pi*r = 156.9272359\r<BR>\n" );
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document.write( "Since they are the same, the answer is confirmed.\r<BR>\n" );
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document.write( "the answer is:\r<BR>\n" );
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document.write( "r = 2.49757453 centimeters.\r<BR>\n" );
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