document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1057831>Question 1057831</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The diameter of Mars is 4,200 miles.  How many square miles is the surface area of Mars?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #672831 by </B><A HREF=/tutors/aboutme.mpl?userid=solve_for_x><B>solve_for_x(190)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solve_for_x><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=672831\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The surface area of a sphere is given by:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=SA+=+4pi%2Ar%5E2 ALIGN=MIDDLE  ALT=\"SA+=+4pi%2Ar%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "With a diameter of 4,200 miles, the radius is r = 2,100 miles.\r<BR>\n" );
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document.write( "The surface area is then:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=SA+=+4pi%2A%282100%29%5E2%29+=+17640000pi ALIGN=MIDDLE  ALT=\"SA+=+4pi%2A%282100%29%5E2%29+=+17640000pi\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 55,417,694.41 square miles </SPAN>\n" );
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