document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=770585>Question 770585</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The vertices of triangle PQR are P(1,3),Q(5,4) and R(5,15).find a)the length of PR b)the area of triangle PQR? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #469600 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=469600\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> QR would serve well as a base for the triangle.  Same x component, just difference in y is 11 units.  Sketch the graph on coordinate plane and see P is at x=1 while the base, QR is at x=5, so you can find the value of the altitude, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5-1=4 ALIGN=MIDDLE  ALT=\"5-1=4\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  You now have enough to use area formula of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2F2%29%28b%29%28h%29 ALIGN=MIDDLE  ALT=\"%281%2F2%29%28b%29%28h%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, where b is the base, h is the height.\r<BR>\n" );
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document.write( "Area is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28%281%2F2%29%2A11%2A4%29 ALIGN=MIDDLE  ALT=\"highlight%28%281%2F2%29%2A11%2A4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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