document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=153900>Question 153900</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0131139487/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> ventillating duct<BR>\n" );
document.write( "  The diameter of a circular ventilating duct is 140mm.This is joined to a square duct system .To ensure smooth airflow,the area of the circle and square sections must be equal.To the nearest millimeter,what should the length x of a side of the square section be?\r<BR>\n" );
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document.write( "my model :area of circle = ares of square<BR>\n" );
document.write( "             3.14*70^2=x^2<BR>\n" );
document.write( " I know that this problems should be in a quadratic form,but i am having trouble with this one<BR>\n" );
document.write( "Can you help me with this problem please.Thank you very much </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #113277 by </B><A HREF=/tutors/aboutme.mpl?userid=dolly><B>dolly(163)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dolly><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=113277\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi,\r<BR>\n" );
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document.write( "You are absolutely correct.\r<BR>\n" );
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document.write( "3.14 * 70^2 = x^2<BR>\n" );
document.write( "==> 3.14 * 4900 = x^2<BR>\n" );
document.write( "==> 15386 = x^2<BR>\n" );
document.write( "Taking square root on both the sides,<BR>\n" );
document.write( "124.04 = x\r<BR>\n" );
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document.write( "Thus to the nearest millimeter, the side of the square has to be 124 mm.\r<BR>\n" );
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document.write( "Good Luck!!!\r<BR>\n" );
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document.write( "dolly </SPAN>\n" );
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