document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=284014>Question 284014</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i have to find the radius of a hollow sphere<BR>\n" );
document.write( "The metal in the sphere is 3cm thick and the volume of the metal is 684 times pi cm cubed. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #206108 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=206108\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> i have to find the radius of a hollow sphere<BR>\n" );
document.write( "The metal in the sphere is 3cm thick and the volume of the metal is 684 times pi cm cubed.<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "Volume of a sphere = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2Api%2Ar%5E3%2F3 ALIGN=MIDDLE  ALT=\"4%2Api%2Ar%5E3%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The volume of the 3 cm wall is the volume of a sphere of radius (r+3) minus a sphere or radius r.<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=684%2Api+=+%284%2Api%2F3%29%2A%28%28r%2B3%29%5E3+-+r%5E3%29 ALIGN=MIDDLE  ALT=\"684%2Api+=+%284%2Api%2F3%29%2A%28%28r%2B3%29%5E3+-+r%5E3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=684+=+%284%2F3%29%2A%28r%5E3+%2B+9r%5E2+%2B+27r+%2B+27+-+r%5E3%29 ALIGN=MIDDLE  ALT=\"684+=+%284%2F3%29%2A%28r%5E3+%2B+9r%5E2+%2B+27r+%2B+27+-+r%5E3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=171+=+%281%2F3%29%2A%289r%5E2+%2B+27r+%2B+27%29 ALIGN=MIDDLE  ALT=\"171+=+%281%2F3%29%2A%289r%5E2+%2B+27r+%2B+27%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=171+=+3r%5E2+%2B+9r+%2B+9 ALIGN=MIDDLE  ALT=\"171+=+3r%5E2+%2B+9r+%2B+9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=57+=+r%5E2+%2B+3r+%2B+3 ALIGN=MIDDLE  ALT=\"57+=+r%5E2+%2B+3r+%2B+3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%5E2+%2B+3r+-+54+=+0 ALIGN=MIDDLE  ALT=\"r%5E2+%2B+3r+-+54+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(r + 9)*(r - 6) = 0<BR>\n" );
document.write( "r = 6 cm (inside radius)<BR>\n" );
document.write( "r = 9 cm (outside radius)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );