document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1183365>Question 1183365</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A cone has a slant height of 9cm and curved surface 65πcm^2 find: <BR>\n" );
document.write( "(a) The base radius of the cone <BR>\n" );
document.write( "(b) The perpendicular height of the cone (c) The vertical angle of the cone to the nearest degree </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #813654 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=813654\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/display-illustration.mpl?tutor=mananth&illustration_name=cone.png\">.\r<BR>\n" );
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document.write( "pi * r * l = 65 pi   ( r = radius, l = slant height)\r<BR>\n" );
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document.write( "r = 65 *pi/pi*l\r<BR>\n" );
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document.write( "r= 65/l = 65/9 = 7.22 cm\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h+=+sqrt%28l%5E2-h%5E2%29 ALIGN=MIDDLE  ALT=\"h+=+sqrt%28l%5E2-h%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h+=sqrt%289%5E2-7.22%5E2%29 ALIGN=MIDDLE  ALT=\"h+=sqrt%289%5E2-7.22%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "h=5.37 cm<BR>\n" );
document.write( "tan a = 7.22/5.37<BR>\n" );
document.write( "tan a = 1.34 <BR>\n" );
document.write( "a = cotan 1.34<BR>\n" );
document.write( "a=53.2 deg\r<BR>\n" );
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document.write( "angle of cone = 2*(53.2) deg </SPAN>\n" );
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