Final answer:
The perimeter of a square with one side measuring x + 2 is 4x + 8, which is calculated by multiplying the side length by 4 since all sides are equal in a square.
Step-by-step explanation:
To calculate the perimeter of a square, you need to add up the lengths of all four sides. Since all sides of a square are equal, if one side measures x + 2, then all four sides measure x + 2. Thus, the perimeter (P) of the square is given by P = 4 × (x + 2).
Calculating the perimeter, we get:
P = 4(x + 2) = 4x + 8.
Therefore, the correct answer is A. 4x + 8.