document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1151172>Question 1151172</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (P4)<BR>\n" );
document.write( "Calculate:<BR>\n" );
document.write( "a)	i) The volume of concrete needed for a 2.5 m long circular pipe with 400 mm external diameter <BR>\n" );
document.write( " with a 30 mm wall thickness.  \r<BR>\n" );
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document.write( "      ii) Internal surface area.\r<BR>\n" );
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document.write( "     iii) If this surface is to be given 2 coats of a waterproofing coating which is made up in a ratio of  <BR>\n" );
document.write( "          3 parts waterproofing additive to 1 part water. Calculate the amount of additive needed if <BR>\n" );
document.write( "          the coverage is 5 metres/litre. \r<BR>\n" );
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document.write( "b)	Calculate the volume (M3) and surface area (M2) of a solid sphere of radius 45cm.\r<BR>\n" );
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document.write( "c)	Calculate the volume and total surface area of a cone of vertical height 0.3m and diameter 35cm.<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 #772824 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=772824\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Calculate:<BR>\n" );
document.write( "a)	i) The volume of concrete needed for a 2.5 m long circular pipe with 400 mm external diameter <BR>\n" );
document.write( "with a 30 mm wall thickness. <BR>\n" );
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document.write( "Find the volume length 250 cm and 20 cm radius.<BR>\n" );
document.write( "Subtract the volume 250 cm length and 17 cm radius.<BR>\n" );
document.write( "---> concrete in cubic cms (cc's)<BR>\n" );
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