document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=215315>Question 215315</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780199151141/algebrahomeworkh>higher GCSE mathematics</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> a tin of paint covers a surface area of 60m(cubed) and costs £4.50.Find the cost of painting the outside surface of a cylindrical gas holder of height 30m and radius 18m.The top of the gas holder is a flat circle. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #162681 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=162681\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Area  of  cylinder  = area  of  top and  bottom  and  side<BR>\n" );
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document.write( "A= 2(pi*r^2) + (2*pi*r*h)<BR>\n" );
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document.write( "A= 2pi(18)^2 + 2pi(18)(30)<BR>\n" );
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document.write( "A= 2035.75 + 3392.92<BR>\n" );
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document.write( "A= 5428.67  m^2<BR>\n" );
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document.write( "Cost = 5428.67 m^2 * 4.5 # / 6m^2 = 4071.5025 #<BR>\n" );
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document.write( "If  we  do  not  paint  bottom,,A=pi * 18^2 = 1017.876 m^2<BR>\n" );
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document.write( "subtract ,,,,cost  = 1017.876 * 4.5/6 = 763.41 #<BR>\n" );
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document.write( "The  total (without bottom) = 3308 #<BR>\n" );
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