document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1139265>Question 1139265</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A water tank is in the shape of a circular  cylinder with the height of 20 feet and a volume of 320 pie cubic feet. What is the diameter, in feet, of the water tank? <BR>\n" );
document.write( "A. 16<BR>\n" );
document.write( "B. 10<BR>\n" );
document.write( "C. 8<BR>\n" );
document.write( "D. 4<BR>\n" );
document.write( "Why is it that answer? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #757050 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=757050\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a volume of circular cylinder is:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V=pi%2Ar%5E2h ALIGN=MIDDLE  ALT=\"V=pi%2Ar%5E2h\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "given:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V=320pi%2Aft%5E3 ALIGN=MIDDLE  ALT=\"V=320pi%2Aft%5E3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h=20ft ALIGN=MIDDLE  ALT=\"h=20ft\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=320pi%2Aft%5E3=pi%2Ar%5E2%2A20ft ALIGN=MIDDLE  ALT=\"320pi%2Aft%5E3=pi%2Ar%5E2%2A20ft\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28320pi%2Aft%5E3%29%2F%28pi%2A20ft%29=r%5E2 ALIGN=MIDDLE  ALT=\"%28320pi%2Aft%5E3%29%2F%28pi%2A20ft%29=r%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%5E2=16ft%5E2 ALIGN=MIDDLE  ALT=\"r%5E2=16ft%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=4ft ALIGN=MIDDLE  ALT=\"r=4ft\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "=> then diameter of the water tank is: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=2r ALIGN=MIDDLE  ALT=\"d=2r\"   DISABLED_style= \"max-width:90%; height:auto;\" >=><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=8ft ALIGN=MIDDLE  ALT=\"d=8ft\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "answer: C. 8\r<BR>\n" );
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document.write( "Why is it that answer? because, solving equation above, we got radius and diameter is two times greater\r<BR>\n" );
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document.write( "  </SPAN>\n" );
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