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# A tv that has a square screen is advertised as having a 38 in diagonal screen. What would be thw width of the TV screen ?

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A tv that has a square screen is advertised as having a 38 in diagonal screen. What would be thw width of the TV screen ?

please rounf to the nearest tenth.

Feb 7, 2019

$$d=\sqrt{2s^2} = \sqrt{2}s\\ s = \dfrac{d}{\sqrt{2}}\\ s = \dfrac{38}{\sqrt{2}} \approx 26.9~in$$