We measure the home area by calculating the outside dimensions to determine the square footage. Using the
measuring tape, measure the length and width of the building and multiply these exterior dimensions. Let us
understand with an example. For suppose, the exterior dimensions of a building are 70 by 40 feet, then the square
footage is 2800 square feet per floor. When measuring large areas, breaking them down into smaller sections will
make it easier. In those projects, we broke our space into two rectangles that will be measured separately and then added together. Measure the first of these rectangles, starting with the width, followed by the length, and repeat the process on the second rectangle. Mark these measurements in a notebook. It's always a good idea to round up measurements. Once finished calculating all the measurements, add a 10 percent contingency on top to make sure
we have more than enough materials for the job you're about to undertake. To calculate the area of each of our
rectangles, multiply the length by the width. For this project, that sum is 3m x 1m = 3m2 for the first rectangle, and 6 x 2 = 12m2 for the second. Because we are measuring the whole deck, we add these numbers together to get the
final area measurement. So that sum is 3m + 12m = 15m2. Make sure to add the 10 percent contingency to this final
sum. do this by multiplying the total and adding this to the amount to the total. So 15m x 0.1 = 1.5m2, therefore the
total area is 15m + 1.5m = 16.5m2.