The perimeters of a circle, a square and an equilateral

The perimeters of a circle, a square and an equilateral triangle are equal. Which one of the following statements is true?

1. The circle has the largest area
2. The square has the largest area
3. The equilateral triangle has the largest area
4. All the three shapes have the same area

The most symmetric figure will have the largest area.
Hence, circle will be the right answer.