document.write( "Question 322029: What does it mean to refer to a 20-in TV set or a 25-in TV set? Such units refer to the diagonal of the screen. A 20-in TV set also has a width of 16-in. What is its height? \n" ); document.write( "

Algebra.Com's Answer #230530 by nyc_function(2741) $\"\"$ $\"About$

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The lngth of tv sets are given by the diagonal measure. \r
\n" ); document.write( "\n" ); document.write( "The height is the side measure (from top to bottom). \r
\n" ); document.write( "\n" ); document.write( "The width is the bottom measure (from left to right).\r
\n" ); document.write( "\n" ); document.write( "The diagonla is 20. Th width is 16 inches.\r
\n" ); document.write( "\n" ); document.write( "Use the Pythagorean Theorem to find the height.\r
\n" ); document.write( "\n" ); document.write( "Let h = height\r
\n" ); document.write( "\n" ); document.write( "16^2 + h^2 = 20^2\r
\n" ); document.write( "\n" ); document.write( "256 + h^2 = 400\r
\n" ); document.write( "\n" ); document.write( "h^2 = 400 - 256\r
\n" ); document.write( "\n" ); document.write( "h^2 = 144\r
\n" ); document.write( "\n" ); document.write( " $\"sqrt%28h%5E2%29\"$ = $\"sqrt%28144%29\"$ \r
\n" ); document.write( "\n" ); document.write( "h = 12\r
\n" ); document.write( "\n" ); document.write( "The height is 12 inches.\r
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