1. **State the problem:** We need to find the difference between the areas of a square and a rectangle. The square has side lengths of 15 meters each. The rectangle has the same height of 15 meters but its width is not given, so we cannot calculate its area without that information. 2. **Formula for area:** - Area of a square = $\text{side}^2$ - Area of a rectangle = $\text{height} \times \text{width}$ 3. **Calculate the area of the square:** $$\text{Area}_{square} = 15^2 = 225 \text{ m}^2$$ 4. **Calculate the area of the rectangle:** Since the width is not provided, we cannot calculate the exact area of the rectangle. 5. **Difference between areas:** $$\text{Difference} = \text{Area}_{square} - \text{Area}_{rectangle} = 225 - (15 \times \text{width})$$ Without the width of the rectangle, the difference cannot be determined exactly. **Please provide the width of the rectangle to proceed with the calculation.**