document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1040485>Question 1040485</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A frustum of a solid cone has height 30cm,radius 10cm and 15cm.Determine the:<BR>\n" );
document.write( "(i) height of original cone<BR>\n" );
document.write( "(ii) volume of the frustum<BR>\n" );
document.write( "(iii) total surface area of the frustum  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #655388 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=655388\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> VOLUME:   <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2F3%29pi%2Ah%28R%5E2%2BrR%2Br%5E2%29 ALIGN=MIDDLE  ALT=\"%281%2F3%29pi%2Ah%28R%5E2%2BrR%2Br%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, if r is the small radius and R is the large radius.\r<BR>\n" );
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document.write( "HEIGHT of ORIGINAL CONE:  Imagine a cross section through the center axis.  Orient this cross section so that the short base is along x-axis and long base is parallel to but above the x-axis.  Position this on cartesian system so that  the slanted side segment is in quadrant 1, and center is at x=0.  The graph of the endpoints for the slanted segment is the two points, (10,0) and (15,30).\r<BR>\n" );
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document.write( "What is the equation for the line containing those two point?   What is the y-axis intercept?<BR>\n" );
document.write( "..... Do you see how to finish finding the height of the original cone?<BR>\n" );
document.write( "(You really do not need to make the graph.  Doing it might help to visualize the process.)\r<BR>\n" );
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document.write( "SURFACE AREA:<BR>\n" );
document.write( "Formula is  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=pi%28R%5B1%5D%2BR%5B2%5D%29sqrt%28%28R%5B1%5D-R%5B2%5D%29%5E2%2Bh%5E2%29 ALIGN=MIDDLE  ALT=\"pi%28R%5B1%5D%2BR%5B2%5D%29sqrt%28%28R%5B1%5D-R%5B2%5D%29%5E2%2Bh%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(Found in wikipedia) </SPAN>\n" );
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