document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=759375>Question 759375</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if you have a ladder measuring 20 ft high and the rule of thumb is 4 to 1- meaning for every 4 ft ladder length leaning against a wall, the base must be placed one foot away from the wall.  Now suppose the person can reach a height of 3 ft above the ladder, how tall a house can be painted using this ladder? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #462226 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=462226\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Pythagoras.<BR>\n" );
document.write( "Ladder represents the hypotenuse<BR>\n" );
document.write( "of a right angled triangle.<BR>\n" );
document.write( "The base side = 5 (20/4)<BR>\n" );
document.write( "To find the height.<BR>\n" );
document.write( " hypotenuse^2 = base^2 + height^2<BR>\n" );
document.write( " height^2 = hypotenuse^2 - base^2<BR>\n" );
document.write( "          = 20^2 - 5^2<BR>\n" );
document.write( "          = 375<BR>\n" );
document.write( "   height = square root 375<BR>\n" );
document.write( "          = 19.4 ft<BR>\n" );
document.write( "Therefore 19.4ft + 3ft = 22.4ft house can be painted.<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );