document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=345589>Question 345589</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \" A cuboid of volume 1125cm^3 has length equal to three times the breadth.\r<BR>\n" );
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document.write( "(a) Show that the surface area of the cuboid can be expressed as <BR>\n" );
document.write( "   6x^2 + (3000/x)   \"\r<BR>\n" );
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document.write( "I am struggling with this one. So far, I have: \r<BR>\n" );
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document.write( "A = l x b = x.3x.2 = 6x^2<BR>\n" );
document.write( "taking h as height, x.h.2 + 3x.h.2 = 8xh\r<BR>\n" );
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document.write( "... not sure where to go from here, help appreciated! Thanks. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #247182 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=247182\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x is width<BR>\n" );
document.write( "l =3x<BR>\n" );
document.write( ".<BR>\n" );
document.write( "V = l*w*h<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1125+=+3x%2Ax%2Ah ALIGN=MIDDLE  ALT=\"1125+=+3x%2Ax%2Ah\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1125+=+3%2Ax%5E2%2Ah ALIGN=MIDDLE  ALT=\"1125+=+3%2Ax%5E2%2Ah\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h=%28+375%2Fx%5E2%29 ALIGN=MIDDLE  ALT=\"h=%28+375%2Fx%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "surface Area is<BR>\n" );
document.write( "2l*w + 2w*h + 2l*h <BR>\n" );
document.write( ".<BR>\n" );
document.write( "substitute for h:<BR>\n" );
document.write( "2*(3x^2) + 2*x*(375/x^2) + 2**3x*(375/x^2)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6%2Ax%5E2+%2B+750%2Fx+%2B+2250%2Fx ALIGN=MIDDLE  ALT=\"6%2Ax%5E2+%2B+750%2Fx+%2B+2250%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6%2Ax%5E2+%2B+3000%2Fx ALIGN=MIDDLE  ALT=\"6%2Ax%5E2+%2B+3000%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the surface Area </SPAN>\n" );
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