Final answer:
The perimeter of the garden or a rectangular area is found by adding together all the side lengths, which can be measured using a measuring tape and calculated using the formula P = 2l + 2w.
Step-by-step explanation:
To determine the perimeter of the entire garden, you need to add together the lengths of all the sides. In the case of a rectangular town square with a length of 39.2 meters and a width of 17.5 meters, you use the formula P = 2l + 2w where P is the perimeter, l is the length, and w is the width. Thus, the perimeter of the town square is 2 × 39.2 meters + 2 × 17.5 meters equals 113.4 meters. When dealing with an actual garden, you would physically measure the lengths using a measuring tape to get the dimensions. Remember that the perimeter is always a linear measurement, so even if you're working with a scale drawing, such as a garden plan, you need to convert the scaled measurements to actual size to find the real perimeter.