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.
Calculating Square Footage on Rectangles and Triangles. Multiply length times width to find the number of square feet in a square or rectangular room. Remember to calculate unfinished areas and deduct them from the total.To calculate the area of a triangle, multiply its base length by its height and divide that figure by two.alculating Square Footage on Rectangles and Triangles. Multiply length times width to find the number of square feet in a square or rectangular room. Remember to calculate unfinished areas and deduct them from the total.