document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=689271>Question 689271</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat is 9km north then 15 km west from the starting point. How far is the boat from its starting point? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #425888 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=425888\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> North and west are at right angles\r<BR>\n" );
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document.write( "so pythagoras theorem will apply\r<BR>\n" );
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document.write( "the distance from starting point to the final point acts as the hypotenuse.\r<BR>\n" );
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document.write( "so apply pythagoras theorem<BR>\n" );
document.write( "d^2= 15^2+9^2\r<BR>\n" );
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document.write( "d^2= 225+81\r<BR>\n" );
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document.write( "d^2= 306\r<BR>\n" );
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document.write( "d= sqrt(306)\r<BR>\n" );
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document.write( "d= 17.5 km\r<BR>\n" );
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document.write( "the distance from the starting point </SPAN>\n" );
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