document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=747848>Question 747848</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A light is to be mounted on the side of a building 18ft above the ground. The closest a ladder can be placed to the building is 6ft. To the nearest foot how long of a ladder will the electrician need so that he can mount the light? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #455190 by </B><A HREF=/tutors/aboutme.mpl?userid=Kg2003><B>Kg2003(10)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Kg2003><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=455190\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If you draw the picture, you will see that it is a right triangle you are solving for. To solve for the hypotenuse(the ladder in this case) you would use the Pythagorean theorem which is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a%5E2%2Bb%5E2=c%5E2+ ALIGN=MIDDLE  ALT=\"+a%5E2%2Bb%5E2=c%5E2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >. When you substitute in your values you get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+18%5E2%2B6%5E2=c%5E2+ ALIGN=MIDDLE  ALT=\"+18%5E2%2B6%5E2=c%5E2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Next simplify and get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+324%2B36=c%5E2+ ALIGN=MIDDLE  ALT=\"+324%2B36=c%5E2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Simplify some more and now you have <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+360=c%5E2+ ALIGN=MIDDLE  ALT=\"+360=c%5E2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > Square root both sides and do some rounding to get that the ladder is approximately 19 feet long.  </SPAN>\n" );
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