The diagonal length of an 80-inch TV screen is 80x2.54=203.2 cm. The length and width are 181cm and 111cm respectively. The diagonal length of the screen of the 65-inch TV is 65x2.54=165.1 cm; Width is 16*8.992=143.9cm, height is 9*8.992=80.93c, the height difference (width difference) of the two is 111-80.93=30.07cm, that is, 30cm, with mm is 300mm, China's ruler is 9 inches.
In a normal 4 to 3 ratio, the 80 inch width is 111cm, and the 60 inch short side is 91.42cm