Determining the total distance around a two-dimensional shape, rounded to a single decimal place, involves summing the lengths of all its sides. For instance, if a triangle has sides measuring 3.2 units, 4.5 units, and 5.1 units, the perimeter would be the total of these lengths: 3.2 + 4.5 + 5.1 = 12.8 units. The final result, 12.8, is already expressed to the nearest tenth.
Accurate measurement of the boundary of a shape has practical applications in various fields. In construction, it’s crucial for estimating material requirements for fencing, edging, or trim. In surveying and mapping, it aids in calculating land area and property boundaries. Historically, understanding perimeters was essential for land division, architectural planning, and the creation of geometric art.
