document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=79392>Question 79392</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help answer this question:\r<BR>\n" );
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document.write( "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 #56976 by </B><A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><B>tutorcecilia(2152)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><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=tutorcecilia><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=56976\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the formula for the Pythagorean Theorem to solve because the television screen forms two right triangles.<BR>\n" );
document.write( "a^2+b^2=c^2<BR>\n" );
document.write( "a=one side = x<BR>\n" );
document.write( "b=the other side = x [because the TV screen is a square -- all sides are equal]<BR>\n" );
document.write( "c=the hypotenuse = the diagonal = 18<BR>\n" );
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document.write( "Plug-in the values and solve:<BR>\n" );
document.write( " a^2+b^2=c^2  <BR>\n" );
document.write( "x^2+b^2=18^2<BR>\n" );
document.write( "2x^2=18^2<BR>\n" );
document.write( "2x^2=324<BR>\n" );
document.write( "2x^2/2=324/2<BR>\n" );
document.write( "x^2=162<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28sqrt%28x%5E2%29%29 ALIGN=MIDDLE  ALT=\"%28sqrt%28x%5E2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28sqrt%28162%5E2%29%29 ALIGN=MIDDLE  ALT=\"%28sqrt%28162%5E2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x=12.7279=12.73<BR>\n" );
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document.write( "Check by plugging all of the values back into the original formula:<BR>\n" );
document.write( "a^2+b^2=c^2<BR>\n" );
document.write( "(12.7279)^2+(12.729)^2=18^2<BR>\n" );
document.write( "324.054=324 [close-enough]<BR>\n" );
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