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.
Step 4. Calculate the area of triangular spaces by measuring the base and the vertical height of each triangle. Find the square footage by dividing the base dimension in half, then multiplying the result by the height. For example, if the base is 12 feet and the height is 10 feet, the square footage is 6 x 10 = 60 feet. Add together the square footage values of the square, rectangular and triangular floor areas to find the total square footage of your attic.