document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=336994>Question 336994</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The area of a circular ring is 90<BR>\n" );
document.write( "      . If the radius of the outer circle<BR>\n" );
document.write( "forming the ring is 9, what is the radius of the inner circle<BR>\n" );
document.write( "of the ring? (Assume the circles forming the ring have the same center.)\r<BR>\n" );
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document.write( "       </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #241536 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=241536\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The area of a circular ring is 90<BR>\n" );
document.write( ". If the radius of the outer circle forming the ring is 9,<BR>\n" );
document.write( " what is the radius of the inner circle of the ring?<BR>\n" );
document.write( " (Assume the circles forming the ring have the same center.)<BR>\n" );
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document.write( "Find the total area of the circle<BR>\n" );
document.write( "A = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=pi%2A9%5E2 ALIGN=MIDDLE  ALT=\"pi%2A9%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "A = 254.469<BR>\n" );
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document.write( "The the area of the small circle: 254.469 - 90 = 164.469 <BR>\n" );
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document.write( "Find the radius (r) of the small circle<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=pi%2Ar%5E2 ALIGN=MIDDLE  ALT=\"pi%2Ar%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 164.469<BR>\n" );
document.write( "r = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28164.469%2Fpi%29 ALIGN=MIDDLE  ALT=\"sqrt%28164.469%2Fpi%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "r = 7.235 is the radius of the small circle<BR>\n" );
document.write( ":<BR>\n" );
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document.write( "Check this:<BR>\n" );
document.write( " overall area - small circle area<BR>\n" );
document.write( "254.469 - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=pi%2A7.235%5E2 ALIGN=MIDDLE  ALT=\"pi%2A7.235%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 90.0 </SPAN>\n" );
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