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OpenStudy (anonymous):
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 25-in tv set also has the width of 20 inches. What is its height? The height of a 25-in tv is __ inches.
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OpenStudy (anonymous):
20^2 + h^2 = 25^2 h^2 = 25^2 - 20^2 = 225 \[\sqrt{h} = \sqrt{225}\] h = 15
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