Final answer:
The dimensions of the actual floor are 2000 meters by 2000 meters and the area is 4,000,000 square meters.
Step-by-step explanation:
The dimensions of the actual floor can be found by multiplying the dimensions of the grid by the scale factor. Since the grid has 200 increments of 10, the dimensions are 200 x 10 = 2000 meters by 200 x 10 = 2000 meters.
The area of the actual floor can be found by multiplying the length and width. So the area is 2000 meters x 2000 meters = 4,000,000 square meters.