document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=754364>Question 754364</A>: <I><SPAN STYLE=\"word-break: break-all;\"> AB is a chord of a circle centre O. The radius of the circle is 50 cm long and the length of AB is 60 cm. What is the distance of AB from O? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #459009 by </B><A HREF=/tutors/aboutme.mpl?userid=dkppathak><B>dkppathak(439)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dkppathak><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=dkppathak><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=459009\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> length of chord is 60 cm<BR>\n" );
document.write( "half of chord will be  30 cm  (perpendicular from center to chord bisect the chord)<BR>\n" );
document.write( "radius of circle is 50 cm <BR>\n" );
document.write( "therefor  it will be right triangle <BR>\n" );
document.write( "whose hypotenuse will be 50 cm and other side half of chord 30 cm<BR>\n" );
document.write( "distance of chord from center can be calculate by using Pythagoras theorem<BR>\n" );
document.write( "H^2 = p^2 +s^2<BR>\n" );
document.write( "p^2 =h^2-p^2<BR>\n" );
document.write( "p^2 =50^2-30^2<BR>\n" );
document.write( "P^2=2500-900<BR>\n" );
document.write( "   =1600<BR>\n" );
document.write( "p= sqrt 1600<BR>\n" );
document.write( "P =40 cm<BR>\n" );
document.write( "ANSWER  40 cm  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );