document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=813871>Question 813871</A>: <I><SPAN STYLE=\"word-break: break-all;\"> in an acute Triangle ABC, an altitude AD is drawn. Find the area of triangle ABC if AB= 15 in. , AC= 18 in. , and BD = 10 in. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #490018 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=490018\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 15*2=10^2+d^2<BR>\n" );
document.write( "d^2=125<BR>\n" );
document.write( "d = 5 sqrt(5)<BR>\n" );
document.write( "d = 11.180 AD<BR>\n" );
document.write( "18^2=125+f^2<BR>\n" );
document.write( "q^2 = 199<BR>\n" );
document.write( "q = sqrt(199)<BR>\n" );
document.write( "q = 14.107 CD<BR>\n" );
document.write( "area =1/2 *24.107*11.180<BR>\n" );
document.write( "area of ABC = 134.758 sq in<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );