Final answer:
The perimeter of a rectangle with length 39.2 meters and width 17.5 meters is calculated as 113.4 meters using the formula P = 2l + 2w, rounded to one decimal place.
Step-by-step explanation:
To calculate the perimeter of a rectangle with a given length (l) of 39.2 meters and width (w) of 17.5 meters, we use the formula P = 2l + 2w. Plugging in the given dimensions, we obtain P = 2(39.2) + 2(17.5) = 78.4 + 35 = 113.4 meters. When we take into account significant figures, we see that the width and length are specified to the tenth of a meter, suggesting our final answer should also be rounded to the tenth of a meter. Thus, the perimeter of the town square is 113.4 meters, and we do not need to round further because this is already to the nearest tenth.