What does it mean to refer to a 20 inch TV set or a 25 in TV set?
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Such units refer to the diagonal of the screen. A 35 inch TV set also has a width of 28 inches. What is the height? 35 in tv=
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Answer:
It depends on whether you're talking about a modern flatscreen set with a 16:9 ratio screen, or an older analog set with the 4:3 ratio. For 16:9, here's the math: H = D x 0.4901. Example: a 35 inch diagonal set is 35 x .4901 = 17.2 inches high (rounded). W= D x 0.8716. In the same example, the 35 inch set is 35 x 0.8716 = 30.5 inches wide. For 4:3 screens: H = D x 0.6. Example: 35 x 0.6 = 21 inches high. W= D x 0.8. In the same example, 35 x 0.8 = 28 inches wide.
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Other answers
You can use Pythagoras's theorem to calculate this - or a tape measure.
Alan
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