document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1027471>Question 1027471</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1<BR>\n" );
document.write( "a sector of circle  radius 7cm subtending an angle of 270° at the center of the circle,is used to form cone.<BR>\n" );
document.write( "a:find the base radius of the cone.<BR>\n" );
document.write( "b:calculate the area of the base of the cone correct to the nearest square centimetres. ( take &#960;=22/7).<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #642754 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=642754\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi there,<BR>\n" );
document.write( "Angle/360 = Length of arc/Pi x diameter.<BR>\n" );
document.write( "270/360 = Length of arc/Pi x 14<BR>\n" );
document.write( "Length of arc = (270 x Pi x 14)/360<BR>\n" );
document.write( "Length of arc = 32.99cm.(2 decimal places)<BR>\n" );
document.write( "When the sector is folded into a cone<BR>\n" );
document.write( "the arc length becomes the cone's<BR>\n" );
document.write( "circumference.<BR>\n" );
document.write( "Circumference = Pi x diameter.<BR>\n" );
document.write( "32.99 = Pi x diameter.<BR>\n" );
document.write( "Diameter = 32.99/Pi<BR>\n" );
document.write( "Diameter = 10.5cm<BR>\n" );
document.write( "Diameter = 2 x radius<BR>\n" );
document.write( "Radius = Diameter/2<BR>\n" );
document.write( "Radius = 10.5/2<BR>\n" );
document.write( "Radius = 5.25cm<BR>\n" );
document.write( "b) Area of base of cone = Pi x radius^2<BR>\n" );
document.write( "Area = Pi x 5.25^2<BR>\n" );
document.write( "Area = 86.59cm^2<BR>\n" );
document.write( "Area = 87cm^2 (nearest whole square centimetre)<BR>\n" );
document.write( "Hope this helps :-) </SPAN>\n" );
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