Geometry and TrigonometryEasyScreen size from width and height
Geometry and Trigonometry practice question
A television screen is 16 inches wide and 12 inches tall. Screen sizes are given by the length of the diagonal. What is the size of this screen, in inches?
Answer: 20
16² + 12² = 256 + 144 = 400, and √400 = 20.
Common wrong answers
- If you answered 14
- 14 averages the width and height.
- If you answered 28
- 28 adds the width and height.
- If you answered 400
- 400 is the square of the diagonal.
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