document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1189474>Question 1189474</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In the diagram below, what is the distance from Point E to Point F In meters\r<BR>\n" );
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document.write( "Diagram: https://imgur.com/a/1ywHrcW </SPAN>\n" );
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document.write( "All four triangles are similar, because they are right triangles which have acute angles that are congruent.  So<br><BR>\n" );
document.write( "BF/BC=BC/BD<br><BR>\n" );
document.write( "Given BC=40 and CD=9, we can determine BD=41.  Then in similar triangles BFC and BCD<br><BR>\n" );
document.write( "BF/BC=BC/BD<BR>\n" );
document.write( "BF/40=40/41<BR>\n" );
document.write( "BF=(40/41)*40<br><BR>\n" );
document.write( "That makes FD=(1/41)*40.<br><BR>\n" );
document.write( "Next, BE and FD are the same length, so<br><BR>\n" );
document.write( "EF = (39/41)*40<br><BR>\n" );
document.write( "ANSWER: BF=1560/41 </SPAN>\n" );
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