document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1033442>Question 1033442</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A person six feet tall walks around the earth. Assuming the earth is a perfect sphere, how many feet farther does the top of this person's head travel than the bottoms of his feet? Express your answer in terms of $\pi$. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #648078 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=648078\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The circumference of a sphere is 2pi*r<BR>\n" );
document.write( "The circumference of a sphere 6 feet wider is (2*pi*(r+6 feet))<BR>\n" );
document.write( "The ratio is r+6 feet/r <BR>\n" );
document.write( "If we use 4000 miles for the Earth's radius, the circumference is 2*pi*4000=8000*pi<BR>\n" );
document.write( "The radius to the person's head, using 6 feet as 1/880 mile, is 2*pi*4000(1/880)=8000*(2/880)*pi<BR>\n" );
document.write( "The difference is pi(8000 2/880)-8000=2pi/880 miles<BR>\n" );
document.write( "This is 12 pi feet. </SPAN>\n" );
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