document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=955620>Question 955620</A>: <I><SPAN STYLE=\"word-break: break-all;\"> http://jasper.kaptest.com/content/media/94/124694.9.27391735-902d-4512-9abc-9d8f449e7b51.png\r<BR>\n" );
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document.write( "In the figure above, four right triangles are formed by inscribing a square in the circle with center C and adding four line segments tangent to circle C. Two sides of each triangle have a length of s, as shown. What is the circumference of the circle, in terms of s ?\r<BR>\n" );
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document.write( "		2&#960;s<BR>\n" );
document.write( "		4s<BR>\n" );
document.write( "		4s sqrt 2<BR>\n" );
document.write( "		4&#960;s sqrt 2<BR>\n" );
document.write( "		4&#960;s<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 #583805 by </B><A HREF=/tutors/aboutme.mpl?userid=Edwin+McCravy><B>Edwin McCravy(20055)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Edwin+McCravy><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=Edwin+McCravy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=583805\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28200%2C200%2C-1.3%2C1.3%2C-1.3%2C1.3%2C%0D%0A%0D%0Arectangle%28-1%2C-1%2C1%2C1%29%2Ccircle%280%2C0%2C1%29%2C%0D%0Aline%28-1%2C0%2C0%2C1%29%2Cline%280%2C1%2C1%2C0%29%2Cline%281%2C0%2C0%2C-1%29%2Cline%280%2C-1%2C-1%2C0%29%2C%0D%0Alocate%28.5%2C1.2%2CS%29%2Clocate%281.05%2C.6%2CS%29%0D%0A%0D%0A%0D%0A+%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Adding those 4 tangents to the circle merely circumscribes a<BR>\n" );
document.write( "larger square around the circle, and if you draw the diagonals of the<BR>\n" );
document.write( "inner (smaller ) square, you see that S is also the radius of the<BR>\n" );
document.write( "circle:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28200%2C200%2C-1.3%2C1.3%2C-1.3%2C1.3%2C%0D%0A%0D%0Arectangle%28-1%2C-1%2C1%2C1%29%2Ccircle%280%2C0%2C1%29%2C%0D%0Atriangle%28-1%2C0%2C1%2C0%2C0%2C1%29%2C+triangle%28-1%2C0%2C1%2C0%2C0%2C-1%29%2C%0D%0Atriangle%28-1%2C0%2C0%2C1%2C0%2C-1%29%2C+triangle%281%2C0%2C0%2C-1%2C0%2C1%29%2C%0D%0Alocate%28.5%2C1.2%2CS%29%2Clocate%281.05%2C.6%2CS%29%2C%0D%0Alocate%28.45%2C0%2CS%29%0D%0A++%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "and since the circlumference of a circle is given by\r<BR>\n" );
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document.write( "C = 2<font face = \"symbol\">p</font>r, and since the radius\r<BR>\n" );
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document.write( "is S, we substitute S for r and get\r<BR>\n" );
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document.write( "C = 2<font face = \"symbol\">p</font>S\r<BR>\n" );
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document.write( "Edwin</pre>\r<BR>\n" );
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