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March 28, 2017

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screen sizes (TVs, computers) are given by measuring the length of the diagonal. If the base length of a 40-inch TV is 32", what is the surface area of the TV screen?

  • Math - ,

    The base length, the screen height and the screen diagonal form a right-angle triangle.
    Therefore, you can use pythagorean theorem to calculate screen height:
    sqrt(40**2 - 32**2) = 24.0
    Then surface is length by height:
    32 * 24 = 768

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