SOLUTION: Hello, I have no idea on how to solve this equation. I was thinking maybe using the perimeter formula?? If someone could lead me in the right direction, that would be great.(see

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Question 249086: Hello,
I have no idea on how to solve this equation. I was thinking maybe using the perimeter formula?? If someone could lead me in the right direction, that would be great.(see below)
What does it mean to refer to a 20 in TV set or a 25 in set? Many are refering to the diagonal of the screen. A 25 in tv set also has a width of 20 in. What is the height? (in inches)

Thanks
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What does it mean to refer to a 20 in TV set or a 25 in set? Many are referring to the diagonal of the screen. A 25 in tv set also has a width of 20 in. What is the height? (in inches)
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Draw the picture including the diagonal.
Label the diagonal "25"
Label the width "20"
Label the height "x".
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Use Pythagoras to solve for "x":
x^2 + 20^2 = 25^2
x^2 = 625 - 400
x^2 = 225
x = 15" (height)
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Cheers,
Stan H.