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Many television screens are rectangles that are measured by the length of their diagonals. The ratio of the horizontal length to the height in a standard television screen is 4:3 What is the horizontal length (in inches) of a ``27-inch'' television screen?
 

 Dec 2, 2020

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 #1
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Pythag theorem

(4x)^2  + (3x)^2 = 27^2

25 x^2 = 729

x = 5.4

 

5.4 * 4     by    5.4 x 3

21.6 inches      by   16.2 inches

 Dec 2, 2020
 #1
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+1
Best Answer

Pythag theorem

(4x)^2  + (3x)^2 = 27^2

25 x^2 = 729

x = 5.4

 

5.4 * 4     by    5.4 x 3

21.6 inches      by   16.2 inches

Guest Dec 2, 2020

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