document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=934871>Question 934871</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The dimension of a box are a, a – 1, a + 4 inches, Find how fast the total surface area S increases as a increases. (differential calculus problem) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #567920 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=567920\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> S = 2(a(a-1) + a(a+4) + (a-1)(a+4))\r<BR>\n" );
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document.write( "S = 6a^2 + 12a - 8\r<BR>\n" );
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document.write( "dS/da = 12a + 12 </SPAN>\n" );
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