document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=4045>Question 4045</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The diagonal of a square television screen measures 18 inches.  What is the length of the sides? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #1781 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=1781\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The diagonal of a square forms the hypotenuse of a right triangle.\r<BR>\n" );
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document.write( "If you know the length of the hypotenuse of a right triangle, you can find the length of the sides using the Pythagorean theorem.\r<BR>\n" );
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document.write( "c^2 = a^2 + b^2    In the square with sides, a and b, a = b and c is the diagonal.\r<BR>\n" );
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document.write( "c^2 = 2a^2  Divide both sides by 2.<BR>\n" );
document.write( "a^2 = c^2/2 Take the square root of both sides.<BR>\n" );
document.write( "a = c/sqrt(2)<BR>\n" );
document.write( "a = 18/sqrt(2) = 18/1.4142... = 12.73 inches, approximately. </SPAN>\n" );
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