document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1087165>Question 1087165</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chord 4.2cm long is 2.8cm from the centre of a circle. Calculate the radius of the circle. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #701432 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=701432\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A chord 4.2cm long is 2.8cm from the centre of a circle. Calculate the radius of the circle.<BR>\n" );
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document.write( "2.1^2 = (r + 2.8)*(r - 2.8)<BR>\n" );
document.write( "4.41 = r^2 - 7.84<BR>\n" );
document.write( "r^2 = 12.25<BR>\n" );
document.write( "r = 3.5<BR>\n" );
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