document.write( "Question 182380: Television Sets. 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 30-in TV set also has a width of 24 inches. What is its height?
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document.write( "I understand how to get the diagonal piece, but can’t figure out the height part. I want to say the height would be 24 inches, as most screens are square, but I think that is wrong. Can you please help?
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Algebra.Com's Answer #136883 by nerdybill(7384) You can put this solution on YOUR website! A 30-in TV set also has a width of 24 inches. What is its height? \n" ); document.write( ". \n" ); document.write( "You need to apply Pythagorean theorem: \n" ); document.write( "h^2 + w^2 = d^2 \n" ); document.write( "where \n" ); document.write( "h is height \n" ); document.write( "w is width \n" ); document.write( "d is diagonal \n" ); document.write( ". \n" ); document.write( "Plugging in your numbers: \n" ); document.write( "h^2 + w^2 = d^2 \n" ); document.write( "h^2 + 24^2 = 30^2 \n" ); document.write( "h^2 + 576 = 900 \n" ); document.write( "h^2 = 324 \n" ); document.write( "h = 18 inches (height) \n" ); document.write( " |