Final answer:
Due to a typo or misunderstanding, the original query about a square with a dark blue section is unclear. For the town square perimeter question, using the given dimensions, the perimeter of the rectangle is calculated to be 113.4 meters using the formula P = 2l + 2w.
Step-by-step explanation:
The student's question seems to contain a typo or a misunderstanding in the phrase '13 × 25 of the square'. This is not a standard way to refer to a portion of a square. Typically, we would refer to a portion of a square as a fraction or a percentage of the total area. Assuming that the student might be referring to a fraction, such as 1/3 or 1/25, and is asking about a portion of a square that is dark blue, we would then look for how much of the square is covered by the dark blue section.
However, to answer the question related to the perimeter of a town square, given the dimensions length of 39.2 meters and a width of 17.5 meters, we can use the perimeter formula P = 2l + 2w.
Perimeter = 2 × 39.2 + 2 × 17.5
Perimeter = 78.4 + 35
Perimeter = 113.4 meters
This calculation gives us the perimeter of the rectangle that the question refers to as a town square.