My grandfather owned plenty of land, which easily encompassed an area of 1000 × 200 m2. He wanted to give some part of it to his servant Ramu. But he did not gift it directly. He supplied the material that could form a fence of length 100 m only. Then he allowed Ramu to take any part with four sides that could be encased with the help of the given fencing material.
What is the maximum possible land Ramu can take away from my grandfather? (All the four sides are fenced).