document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=270156>Question 270156</A>: <I><SPAN STYLE=\"word-break: break-all;\"> WOULD YOU PLEASE CHECK IF I HAVE THE CORRECT ANSWER TO MY QUESTION? I MAKE THE ANSWER TO BE 3,139,500 CUBIC METRES.\r<BR>\n" );
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document.write( "The question? there are 3 Tunnels and they are each 50 kilometers long.<BR>\n" );
document.write( "2 of the tunnels have a 7.6 metre diameter and the 3rd tunnel which is smaller has a 4.8 metre diameter, the tunnels are to be treated as a tube and I need to find the volume of rubble removed from this circular cross section tunnel.\r<BR>\n" );
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document.write( "Also what is a circular cross section. Any help would be much appreciated. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #197940 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=197940\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The question? there are 3 Tunnels and they are each 50 kilometers long.<BR>\n" );
document.write( "2 of the tunnels have a 7.6 metre diameter and the 3rd tunnel which is smaller has a 4.8 metre diameter, the tunnels are to be treated as a tube and I need to find the volume of rubble removed from this circular cross section tunnel.<BR>\n" );
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document.write( "The circular cross section does not have a volume; it has an area.<BR>\n" );
document.write( "The area = (pi)r^2 = (pi)(7.6/2)^2 = 45.36 sq meters for each of <BR>\n" );
document.write( "two tunnels.<BR>\n" );
document.write( "The volume of each of these tunnel would be 45.36*50,000 = 2268000 cu meters<BR>\n" );
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document.write( "The area = (pi)(4.8/2)^2 = 18.10 sq meters for the other tunnel.<BR>\n" );
document.write( "The volume of the smaller tunnel would be 18.10*50,000 = 904778.68 cu meters<BR>\n" );
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document.write( "Also what is a circular cross section.<BR>\n" );
document.write( "Take a wooden telephone pole.<BR>\n" );
document.write( "Use a saw to cut it in half.<BR>\n" );
document.write( "The flat top of the bottom half of the pole is a circular cross section of<BR>\n" );
document.write( "the pole. The section has area but no volume. Only the pole has volume.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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