document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=795574>Question 795574</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An open cylindrical acid-bath is made from sheet lead 1 cm thick. Its external dimensions are 24 cm diameter and 20 cm depth. Calculate the mass of the bath if the density of lead is 11.45 g/cm3? (The answer is 20.9 kg) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #481065 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=481065\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An open cylindrical acid-bath is made from sheet lead 1 cm thick. Its external dimensions are 24 cm diameter and 20 cm depth. Calculate the mass of the bath if the density of lead is 11.45 g/cm3.<BR>\n" );
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document.write( "The volume of the base is pi*r^2*h = 144pi cc<BR>\n" );
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document.write( "The volume of the sides is pi*12^2*20 - pi*11^2*20 = 460pi cc<BR>\n" );
document.write( "Total = 604pi cc<BR>\n" );
document.write( "Mass = vol*density = 11.45*604*pi grams<BR>\n" );
document.write( "=~ 21727 grams<BR>\n" );
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document.write( "You get 20.9 kg if you use 19 cm as the depth, rather than 20 cm.<BR>\n" );
document.write( "The depth is stated as 20 cm, that's the distance from the top to the inside bottom, not the outside.  External dimensions and depth are not the same.\r<BR>\n" );
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