document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=427998>Question 427998</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Guess what percentage of the world's population could be packed into a cubical box measuring 1/2 mile on each side. Assume that the world's population is 6.6 billion and that the volume of a typical person is about 2 cubic feet. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #297582 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=297582\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> each person takes up a volume of 2 cubic feet.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "cubical box measures 1/2 mile on each side.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "1/2 mile is equal to 5280 / 2 = 2640 feet.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "volume of the cubical box is 2640^3 = 1.8399744 * 10^10 cubic feet.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "divide that by 2 cubic feet per person and you get 9.199872 * 10^9 persons that can fit into that space.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "there are 6.6 billion persons in the world.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "that's equivalent to 6.6 * 10^9 persons.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the proportion of persons that can fit into this space is therefore equal to (9.199872 * 10^9) / (6.6 * 10^9) = 9.199872 / 6.6 = 1.39392.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "139.392% of the world's population can fit into a space that is 1/2 mile on each side.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );