But this has been exacerbated by human activities which have led to: 1) an increase in greenhouse gas emissions that causes heat to remain trapped within the troposphere, and 2) a decrease in ozone in the stratosphere, causing less sunlight to be absorbed by the ozone layer, resulting in a cooling of the stratosphere.
When measuring for floor tile the rule is: Length x Width + Waste = Amount Needed. Waste Factor will vary based upon tile size, layout, configuration of room, patterns, etc. Typical waste factor is about 10%. Add 15% for tile being installed diagonally or for a room with lots of jogs and corners.
Convert the tile length to feet: 12 inches = 1 ft then 15 inches = 15/12 = 1.25 feet Then the area of each tile = 1.25 x 1.25 = 1.5625 sq ft The number of tiles required â¦ = 378 Ã· 1.5625 = 241.92 (round up to 242) However, the actual dimensions of the area can affect the number of tiles required.