1. Stating the problem: We need to find the area of a square whose one side length is 100 cm, and express the area in square meters. 2. Convert the side length from centimeters to meters by dividing by 100 because 100 cm = 1 m. $$\text{side length in meters} = \frac{100}{100} = 1 \text{ m}$$ 3. Calculate the area of the square using the formula for the area of a square, which is side length squared. $$\text{area} = (1)^2 = 1 \text{ square meter}$$ 4. Therefore, the area of the square is 1 square meter.