document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=388009>Question 388009</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In an evil experiment, a small spherical drop of oil is allowed to fall onto the surface of water so that it produces a thin film of oil covering a large area.<BR>\n" );
document.write( "a) Given that the volume of a drop of oil is 12.5 cubic mm, find the number of drops which can be produced by 5000 cubic mm of oil, and,<BR>\n" );
document.write( "b)Given that the volume V of a sphere of radius r is 4/3 pi r^3, express r in terms of V and pi. Then calculate the radius of the drop of oil.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #275155 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=275155\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In an evil experiment, a small spherical drop of oil is allowed to fall onto the surface of water so that it produces a thin film of oil covering a large area.<BR>\n" );
document.write( "a) Given that the volume of a drop of oil is 12.5 cubic mm, find the number of drops which can be produced by 5000 cubic mm of oil<BR>\n" );
document.write( "5000/12.5 = 400 drops<BR>\n" );
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document.write( "b)Given that the volume V of a sphere of radius r is 4/3 pi r^3, express r in terms of V and pi. Then calculate the radius of the drop of oil.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V+=+4%2Api%2Ar%5E3%2F3 ALIGN=MIDDLE  ALT=\"V+=+4%2Api%2Ar%5E3%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%5E3+=+3V%2F%284%2Api%29 ALIGN=MIDDLE  ALT=\"r%5E3+=+3V%2F%284%2Api%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r+=+%283V%2F%284%2Api%29%29%5E%281%2F3%29 ALIGN=MIDDLE  ALT=\"r+=+%283V%2F%284%2Api%29%29%5E%281%2F3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r+=+%283%2A12.5%2F%284%2Api%29%29%5E%281%2F3%29%29 ALIGN=MIDDLE  ALT=\"r+=+%283%2A12.5%2F%284%2Api%29%29%5E%281%2F3%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "r =~ 1.4397 mm<BR>\n" );
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document.write( "I replied to your email, got a kickback.\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );