**To calculate the square meterage of a rectangular area, multiply the height in meters by the width in meters.** The resulting number represents how many square meters of geometric space are contained in an area, including all contained space. This is a multi-dimensional area calculation.

When calculating the area of a room, begin with the shapes that compose it. Note these and reconstruct the room as the sum of these shapes, such as a large rectangle with an attached square and small triangle. Measure the height and width of each of these and multiply the two figures. This will provide a set of individual square meterage figures that you can then add together to find the entire room's sum.