document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=882860>Question 882860</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A field microphone used at a soccer game has a parabolic cross section and is 24 inches wide at the opening. The focus is 16 inches from the vertex. Find the depth of the microphone. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #533665 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=533665\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A field microphone used at a soccer game has a parabolic cross section and is 24 inches wide at the opening. The focus is 16 inches from the vertex. Find the depth of the microphone.<BR>\n" );
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document.write( "Consider the microphone like a parabola that opens right with vertex at the origin.<BR>\n" );
document.write( "Its basic equation: y^2=4px<BR>\n" );
document.write( "For given parabolic microphone:<BR>\n" );
document.write( "p=16<BR>\n" );
document.write( "4p=64<BR>\n" );
document.write( "equation: y^2=64x<BR>\n" );
document.write( "12^2=64x<BR>\n" );
document.write( "144=64x<BR>\n" );
document.write( "x=144.64/64<BR>\n" );
document.write( "x=2.25<BR>\n" );
document.write( "depth of the microphone=2.25 inches </SPAN>\n" );
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