document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1007735>Question 1007735</A>: <I><SPAN STYLE=\"word-break: break-all;\"> O is the centre of a circle. Angle AOB is a right angle and chord AB = 10cm. Find the radius of the circle (2dps) and calculate the exact value of the shaded area if pi = 3.\r<BR>\n" );
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document.write( "Thanks!<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #623618 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=623618\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> O is the centre of a circle. Angle AOB is a right angle and chord AB = 10cm. Find the radius of the circle (2dps) and calculate the exact value of the shaded area if pi = 3.<BR>\n" );
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document.write( "The bisector of AB thru O --> 2 isosceles right triangle.  Label the midpoint of AB point D, the intersection with the distal side of the circle F, and the near side of the circle E.<BR>\n" );
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document.write( "OD = 5 cm<BR>\n" );
document.write( "DF = r + 5<BR>\n" );
document.write( "DE = r - 5<BR>\n" );
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document.write( "AB*BD = DF*DE<BR>\n" );
document.write( "5*5 = (r+5)*(r-5)<BR>\n" );
document.write( "r^2 - 25 = 25<BR>\n" );
document.write( "r^2 = 50<BR>\n" );
document.write( "r = 5sqrt(2) cm<BR>\n" );
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document.write( "idk where the shaded area is.<BR>\n" );
document.write( "I do know pi <> 3, despite what the bible says. </SPAN>\n" );
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