document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=373567>Question 373567</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two surveyors with two-way radios leave the same point at 9:00 AM, one walking due south at 2 mi/hr and the other due west at 4 mi/hr. How long can they communicate with one another if each radio has a maximum range of 2.24 miles? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #265862 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=265862\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> one is moving south  2mph<BR>\n" );
document.write( "the other west.4mph<BR>\n" );
document.write( "..<BR>\n" );
document.write( "they are moving at right angles from the starting point.<BR>\n" );
document.write( "radio range = 2.24 <BR>\n" );
document.write( "2.24*2= 4.48 miles is the maximum distance they can be in touch.<BR>\n" );
document.write( "let the time in contact be t hours<BR>\n" );
document.write( "..<BR>\n" );
document.write( "south bound distance = 2t miles<BR>\n" );
document.write( "weatbound distance = 4t<BR>\n" );
document.write( "..<BR>\n" );
document.write( "(4t)^2+(2t)^2= 4.48^2<BR>\n" );
document.write( "16t^2+4t^2=20.0704<BR>\n" );
document.write( "20t^2= 20.0704<BR>\n" );
document.write( "t^2= 20.0704/20<BR>\n" );
document.write( "t^2= 1 hour<BR>\n" );
document.write( "t = 1 hour they can be in contact<BR>\n" );
document.write( "..<BR>\n" );
document.write( "...<BR>\n" );
document.write( "m.ananth@hotmail.ca<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );