count the number of complete squares, which is two.
Now count the squares which are more than half filled. We consider all these squares as completely filled. In this way, we get two more completely filled squares.
Area: 4 sq cm
For the second figure:
Count the number of complete squares, which is five.
Now count the squares which are more than half filled. We consider all these squares as completely filled. In this way, we get two more completely filled squares.
Area: 7 sq cm
Hence, the second figure has a maximum area.