document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=369568>Question 369568</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a circle with a radius of 10 has its radius decreased by 2 , by what<BR>\n" );
document.write( "percent is the area decreased?\r<BR>\n" );
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document.write( "A. 20% B. 25%C. 36% D. 40% E. none </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #263354 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=263354\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If a circle with a radius of 10 has its radius decreased by 2 , by what<BR>\n" );
document.write( "percent is the area decreased?\r<BR>\n" );
document.write( "\n" );
document.write( "A. 20% B. 25%C. 36% D. 40% E. none<BR>\n" );
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document.write( "Since area of any circle:<BR>\n" );
document.write( "(pi)r^2<BR>\n" );
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document.write( "10 inch radius circle:<BR>\n" );
document.write( "(pi)10^2 = 100(pi)<BR>\n" );
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document.write( "8 inch radius circle:<BR>\n" );
document.write( "(pi)8^2 = 64(pi)<BR>\n" );
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document.write( "Decrease:<BR>\n" );
document.write( "100(pi) - 64(pi) = 36(pi)<BR>\n" );
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document.write( "Percent of decrease:<BR>\n" );
document.write( "[36(pi)]/[100(pi)] * 100<BR>\n" );
document.write( "36/100 * 100<BR>\n" );
document.write( "36% </SPAN>\n" );
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