document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=893227>Question 893227</A>: <I><SPAN STYLE=\"word-break: break-all;\"> an alloy was machined into a flat disk 31.5 mm in diameter and 4.5 mm thick. a hole 7.5 mm in diameter was drilled through the center. the disk weighed 20.2 g. what was the density of the alloy in SI units? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #541259 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=541259\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the volume of the new part.<BR>\n" );
document.write( "The volume is the difference of the two circular areas multiplied by the thickness.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V=%28A%5B2%5D-A%5B1%5D%29t=pi%28R%5B2%5D%5E2-R%5B1%5D%5E2%29t=pi%2815.75%5E2-3.75%5E2%29%284.5%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V=1053pi ALIGN=MIDDLE  ALT=\"V=1053pi\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mm%5E3 ALIGN=MIDDLE  ALT=\"mm%5E3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Converting to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5E3 ALIGN=MIDDLE  ALT=\"m%5E3\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V=1053pi%2A10%5E%28-9%29 ALIGN=MIDDLE  ALT=\"V=1053pi%2A10%5E%28-9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5E3 ALIGN=MIDDLE  ALT=\"m%5E3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The mass in kg would be <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m=20.2%2F1000=2.02%2A10%5E%28-2%29 ALIGN=MIDDLE  ALT=\"m=20.2%2F1000=2.02%2A10%5E%28-2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=kg ALIGN=MIDDLE  ALT=\"kg\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So the density is,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=rho=m%2FV=%282.02%2A10%5E%28-2%29%29%2F%281053pi%2A10%5E%28-9%29%29 ALIGN=MIDDLE  ALT=\"rho=m%2FV=%282.02%2A10%5E%28-2%29%29%2F%281053pi%2A10%5E%28-9%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=rho=6106 ALIGN=MIDDLE  ALT=\"rho=6106\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=kg%2Fm%5E3 ALIGN=MIDDLE  ALT=\"kg%2Fm%5E3\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );