document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=346000>Question 346000</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose a wire is stretched tightly around Earth. (The radius of Earth is approximately 6400Km). Then suppose the wire is cut and its length is increased by 20 km. It is then placed back around the planet so that it is the same distance from Earth at every point. Could you walk under the wire? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #247452 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=247452\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Treat the Earth as a sphere.<BR>\n" );
document.write( "The perimeter would be the circumference of a circle with radius 6400 km.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=2%2Api%2A6400 ALIGN=MIDDLE  ALT=\"C=2%2Api%2A6400\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C%5B1%5D=40212 ALIGN=MIDDLE  ALT=\"C%5B1%5D=40212\"   DISABLED_style= \"max-width:90%; height:auto;\" >km<BR>\n" );
document.write( "Now if we add 20 km,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C%5B2%5D=40212%2B20 ALIGN=MIDDLE  ALT=\"C%5B2%5D=40212%2B20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C%5B2%5D=40232 ALIGN=MIDDLE  ALT=\"C%5B2%5D=40232\"   DISABLED_style= \"max-width:90%; height:auto;\" >km<BR>\n" );
document.write( "Find the radius of the circle with that perimeter,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2Api%2AR=40232 ALIGN=MIDDLE  ALT=\"2%2Api%2AR=40232\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=R=6403 ALIGN=MIDDLE  ALT=\"R=6403\"   DISABLED_style= \"max-width:90%; height:auto;\" > km<BR>\n" );
document.write( "The difference in radii is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dR=6403-6400 ALIGN=MIDDLE  ALT=\"dR=6403-6400\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dR=3 ALIGN=MIDDLE  ALT=\"dR=3\"   DISABLED_style= \"max-width:90%; height:auto;\" >km<BR>\n" );
document.write( "You could easily fit yourself under that, in fact, on a cloudy day you wouldn't even see the wire.  </SPAN>\n" );
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