What is the area of a square with a perimeter of 12?

Oh, what a happy little question! To find the area of a square with a perimeter of 12, we first divide the perimeter by 4 to find the length of one side, which is 3. Then, we simply square that length to find the area, which is 9 square units. Just like painting a beautiful landscape, math can be a joyful experience when we break it down into simple steps.