Mr. Beilein (BEE-line), the beekeeper, has four hives in a square pattern, with his house in the center of the square. Every day he checks on his bees. He walks in a beeline from his house to one of the hives, and from there along the perimeter of the square to the second, third and fourth hives before returning in a beeline to his house. If the side of the square is 200 m, how far does he walk during this process (in meters)? Round answer to 2 decimal places.