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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 10-in TV set also has a width of 8 inches. What is its height?

  • algebra -

    Pythagorean Theorem:

    a^2 + b^2 = c^2

    8^2 + b^2 = 10^2
    64 + b^2 = 100
    b^2 = 100 - 64
    b^2 = 36
    b = 6 inches

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