![]() ![]() To get a wide screen TV that has 461.6 square inches of viewing area, you'd need a 32.88' diagonal wide screen. Your 31' traditional TV has about 461.6 square inches of viewing area. There are generally two ways: the square inches of viewing area and the viewing area height. It depends on how you determine the 'amount' of viewing screen you currently have. ![]() Well, there are two answers to the question. So, if you currently have a 31' traditional TV, you might wonder what size wide screen TV will give you the same 'amount' of viewing screen. ![]() If televisions are sold by their diagonal measurement and wide screen and traditional TVs have different aspect ratios, then a 31' traditional TV will have a different height and width than a 31' wide screen TV. In case you are wondering, a 31' diagonal TV has a width of 24.78' and a height of 18.63'.Įventually if a person ponders the purchase decision enough, they'll come to discover what should have been an obvious fact. Knowing that, knowing that there is a 4:3 ratio between width and height, and knowing some basic algebra that we learned in the 9th grade, we can determine the height and width of a 31' diagonal TV. Since we know that D = 31, we know that D^2 = 961. So, on your 31' TV where we are dealing with height and width and a diagonal corner-to-corner dimenson, we would say that W^2 * H^2 = D^2. You remember that of course! The Pythagorean Theorem states that A^2 + B^2 = C^2 where A & B are length of the sides of a triangle and C is the length of the hypotenuse. To figure out the width and height of your TV you would need to recall your 8th grade math class where you learned about the Pythagorean Theorem. The 'inch size' of the TV always refers to the diagonal measurement of the TV - that is a 31' TV is 31' from one corner to the other corner. This holds true for both traditional TVs and the new wide screen TVs. Why? Because televisions are sold in diagonal inches. So, you know all about screen ratios now, but you probably don't know the height or width of your current TV. BTW - less often you'll hear the width-to-height ratios refered to as 1.33:1 and 1.78:1, which is just another way of saying 4:3 and 16:9 respectively. Clearly, this is what makes the traditional TV look pretty much like a square and a wide screen TV look much more like a rectangle. Now when we compare a 16:9 screen to a 12:9 screen we can see that a new wide screen TV delivers 4 more inches of width for every nine inches of height as compared to a traditional screen. If we go back to our 5th grade math class where we learned about fractions and denominators, we can figure out that the lowest common denominator for 16/9 and 4/3 is 9 - that is a 4:3 screen is the same as saying a 12:9 screen. The newer 'wide screen' TV screen has a width to height ratio of 16:9, which means that for every 9 inches in TV screen height there will be 16 inches of TV screen width. The traditional TV screen has a width to height (aspect) ratio of 4:3 - that means that for every 3 inches in TV screen height, there will be 4 inches of TV screen width. They are becoming more and more popular, and people tend to like the way the look if for no other reason than they look more modern than the mainly square televisions people have had for 60 years. Anyone who is considering purchasing a new TV is probably at least considering the option of purchasing one of the new 'wide screen' televisions. ![]()
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