document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=375791>Question 375791</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Television sets: What does it mean to refer to a 20-in tv set or a 25in tv set? such units refer to the diagonal of the screen. A 25-in tv set also has a width of 20 inches. What is its height?\r<BR>\n" );
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document.write( "What is the height of a 25-in tv? _________inches.\r<BR>\n" );
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document.write( "Please help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #267253 by </B><A HREF=/tutors/aboutme.mpl?userid=jessica43><B>jessica43(140)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jessica43><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=267253\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> So a 25-in TV set has a diagonal length of 25 inches and a width of 20 inches. If you draw a picture of this, you will see that we know two sides of a right triangle, and need to find the length of the third side. To do this, we can use the Pythagorean Theorem: a^2 + b^2 = c^2, where a = width of TV, b = height of TV and c = diagonal length.<BR>\n" );
document.write( "So:<BR>\n" );
document.write( "a^2 + b^2 = c^2<BR>\n" );
document.write( "20^2 + b^2 = 25^2<BR>\n" );
document.write( "400 + b^2 = 625<BR>\n" );
document.write( "b^2 = 225<BR>\n" );
document.write( "b = 15<BR>\n" );
document.write( "So the height of the TV is 15 inches. </SPAN>\n" );
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