document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1067737>Question 1067737</A>: <I><SPAN STYLE=\"word-break: break-all;\"> an arch in the form of a semi ellipse is 18 meters wide at the base and 8 meters high. How wide is the arch at a height of 4 meters above the base?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #682864 by </B><A HREF=/tutors/aboutme.mpl?userid=Edwin+McCravy><B>Edwin McCravy(20060)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Edwin+McCravy><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=Edwin+McCravy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=682864\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28400%2C360%2C-10%2C10%2C-9%2C9%2Cgreen%28line%28-7.794228634%2C4%2C7.794228634%2C4%29%2C%0D%0Aline%28-7.794228634%2C0%2C-7.794228634%2C4%29%2C+line%287.794228634%2C0%2C7.794228634%2C4%29%0D%0A%0D%0A%0D%0A%29%2C%0D%0Ared%28arc%280%2C0%2C18%2C-16%2C0%2C180%29%29%2Cred%28arc%280%2C0%2C18.1%2C-16.1%2C0%2C180%29%29%2C%0D%0Agraph%28400%2C360%2C-10%2C10%2C-9%2C9%2C%28-8sqrt%2881-x%5E2%29%2F9%29%2Asqrt%28sin%289x%29%29%2Fsqrt%28sin%289x%29%29%29+%0D%0A%0D%0A%0D%0A+%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=matrix%288%2C1%2C%0D%0A%0D%0Amatrix%281%2C8%2C++18m%2C+is%2C+the%2C+length%2C+of%2C+the%2C+major%2C+axis%29%2C+%0D%0Amatrix%281%2C6%2C++of%2C+the%2C+%22ellipse%2C%22%2C+so%2C+the%2C+semi-major%29%2C+%0D%0Amatrix%281%2C4%2C++axis%2C+has%2C+length%2C+b=9m++%29%2C+%0D%0Amatrix%281%2C7%2C++8m%2C+is%2C+the%2Clength%2C+of%2C+the%2C+semi-minor%29%2C%0D%0Amatrix%281%2C3%2C+%22axis%2C%22%2C+so%2C+a=8m%29%2C%0D%0Amatrix%281%2C6%2C++The%2C+equation%2C+is%2C+x%5E2%2F9%5E2%2By%5E2%2F8%5E2=1%2C+or%2C+x%5E2%2F81%5E%22%22%2By%5E2%2F64%5E%22%22=1%29%2C%0D%0Amatrix%281%2C5%2C++Substitute%2C+y=4%2C+get%2C+x=+%22%22+%2B-+9sqrt%283%29%2F2%2Cso%29%2C+++%0D%0Amatrix%281%2C6%2C++the%2C+width%2C+when%2C+y=4%2C+is%2C+9sqrt%283%29m=15.58845727m%29%0D%0A%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r\n" );
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document.write( "Edwin</PRE> </SPAN>\n" );
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