document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=987441>Question 987441</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The flow rate of water (F cm^3/s) in a water pipe varies directly as the square of the diameter (D cm) of the water pipe.The flow rate of water is 720  cm^3/s  when the diameter is 30 cm.<BR>\n" );
document.write( "(a) Express F in terms of D.<BR>\n" );
document.write( "(b) Find the flow rate of air in a water pipe with diameter 25 cm.\r<BR>\n" );
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document.write( "My answer<BR>\n" );
document.write( "(a) F=k(D^2)<BR>\n" );
document.write( "     720=k(30^2)<BR>\n" );
document.write( "         k=(4/5)\r<BR>\n" );
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document.write( "(b)  let F cm^3/s be the flow rate of air<BR>\n" );
document.write( "           F=k(D^3)<BR>\n" );
document.write( "           F=(4/5)(25^2)<BR>\n" );
document.write( "           F=500 cm^3/s<BR>\n" );
document.write( "This are my answers i am not sure is these answers are right or wrong.<BR>\n" );
document.write( "Please help me solve this problem.<BR>\n" );
document.write( "Thank you for your kind attention.<BR>\n" );
document.write( "Looking forward for your reply. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #608207 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=608207\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Your work for part (a) is good, but part (b) turned your question into a physics or flow dynamics problem, so either someone with this kind of knowledge needs to respond, or you made a mistake in identifying your material for the problem.  If you stay with water, then you have your formula for F. </SPAN>\n" );
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