i presume you mean the newer HD tv's that are presented in widescreen format. This is because, when a film is shot, it is shot in widescreen ad has been since the creation of filming. "FullScreen" video's are the same as taking a widesceen version of a DVD and hitting the zoom button until it takes up the full screen. In doing so, you lose parts of the film (the edges). To minimize wasted screen/film, tv makers opted to make TVs with similar ratios to film, as to not lose the edges of the film, or have black bars take up 30% of the screen.
rectangular
it's a rectangular prism
TV sets are rectangular, not square, because rectangular shape is the most suitable one to better be viewed by the TV watcher. Rounded shape is used only for gyratory elements, watches, lens, etc.
Because the reels the show is stored in is square and if the tv wasnt square it would be like put a square in a circle
Television is a small, rectangular box that is powered by batterers and energy. It shows small pictures that can move, and it entertains lots of people.
11x13
A panel is a rectangular section of a surface or a covering of a wall, or a group of people gathered to judge, interview or discuss, such as on a television programme.
(202 + 152)0.5 = 25"
Desks, Drawers, Laptops, Desktop Computers, TVs, Monitors, Table, Door, Window, A4 Paper, Books, Boxes, TV Boxes, Game Consoles, Mobile Phones, Tiles, Shelf, Whiteboard, Whiteboard Eraser, Binder, Poster, Billboard, Signs, Ect. There are tons of common objects that are rectangular
a box, an oven, a TV, a ladder and many more. Look around you and you shall probably see at least one thing rectangular!
A Shelf, A Tv, And A Floor Maybe ? Those are some 2 dimensional but its okay. Theres also a Rectangular and Triangular Prisms.
A panel is a rectangular section of a surface or a covering of a wall, or a group of people gathered to judge, interview or discuss, such as on a television programme.