Area is Perimeter

The value of a square's perimeter in inches is the same as the value of its area in square inches. What is the length of it's side?

Aspect ratio

Movies and the screens we view them on typically come in two formats. Standard format has a 3:4 aspect ratio, meaning that the picture height is ³/₄ of the picture width. Widescreen format has a 9:16 aspect ratio, so the picture height is ⁹/₁₆ of the picture width. A widescreen movie shown on a standard screen has two horizontal black bars, one above and one below the picture. Likewise, a standard movie shown on a widescreen screen has vertical black bars on the sides. What percent of the viewing area is lost to the black bars when viewing a widescreen movie on a standard screen? How about when viewing a standard movie on a widescreen screen?

Perimeter is Area

A rectangle is 3 inches longer than it is wide. The value of it's perimeter in inches is the same as the value of its area in square inches. What is the width of the rectangle?

Room Tiles

Heath plans to lay tile in a rectangular room measuring 10 feet by 11 feet. The tiles he plans to use are 8 inch square tiles. Any excess from tiles that require cutting will be discarded. How many tiles will Heath need to purchase for the room?