document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=3479>Question 3479</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A box with a square base no top is to be made from a square piece of tin by cutting out a 3cm square from each corner and folding up the sides. If the box is to hold 48cm3, what size piece of tin should be used. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #1546 by </B><A HREF=/tutors/aboutme.mpl?userid=Pieter><B>Pieter(35)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Pieter><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=1546\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> With o problem like this, it is good to draw some sketches. <BR>\n" );
document.write( "Draw the unfolding (a square with in each corner a smaller square with a side of 3cm) The volume of the box (with a square basesurface) is base² x height and that has to be 48 cm³. When you draw the unfolding, you can see that the height is 3 cm (cause of the smaller squares you cut). b² x h = 48 so<BR>\n" );
document.write( "b²=48/3=16 thus b=4cm. Now we can calculate the surface of the tin:<BR>\n" );
document.write( "A=(b+2*3cm)² This gives a surface of 100cm².\r<BR>\n" );
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document.write( "I hope you understand it, I tried to put a picture on this but it didn't work. You can always mail me at gurdebeke_pieter@hotmail.com  </SPAN>\n" );
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