document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1163042>Question 1163042</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi <BR>\n" );
document.write( "Need some help in solving this beauty. Circle A is shaded and lies inside circle B. The radius of B is 4 inches more than the radius of A. What is the radius of each if the unshaded area is.\r<BR>\n" );
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document.write( "Twice as much as the shaded area\r<BR>\n" );
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document.write( "28pi square inches more than the shaded area\r<BR>\n" );
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document.write( "16pi square inches more than twice as much as the shaded area.\r<BR>\n" );
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document.write( "Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #786993 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=786993\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Circle A is shaded and lies inside circle B. The radius of B is 4 inches more than the radius of A. What is the radius of each if the unstated [sic] unshaded  area is.<BR>\n" );
document.write( "Twice as much as the shaded area<BR>\n" );
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document.write( "a = radius of smaller circle<BR>\n" );
document.write( "Area1 = pi*a^2<BR>\n" );
document.write( "b = radius of larger circle = a+4<BR>\n" );
document.write( "Area2 = pi*(a+4)^2<BR>\n" );
document.write( "Unshaded area = Area2 - Area1 = 2*Area1<BR>\n" );
document.write( "---> Area2 = 3*Area1<BR>\n" );
document.write( "pi*(a+4)^2 = 3pi*a^2<BR>\n" );
document.write( "a^2 + 8a + 4 = 3a^2<BR>\n" );
document.write( "2a^2 - 8a - 4 = 0<BR>\n" );
document.write( "a^2 - 4a - 2 = 0<BR>\n" );
document.write( "Solve for a<BR>\n" );
document.write( "etc\r<BR>\n" );
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document.write( "28pi square inches more than the shaded area<BR>\n" );
document.write( "16pi square inches more than twice as much as the shaded area. </SPAN>\n" );
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