1. The problem states that one side of a square measures 100 cm. 2. Recall that all sides of a square are equal in length. 3. Therefore, each side of the square is 100 cm. 4. The perimeter of a square is calculated by $$P = 4 \times \text{side}$$. 5. Substitute the side length: $$P = 4 \times 100 = 400$$ cm. 6. The area of the square is given by $$A = \text{side}^2$$. 7. Substitute the side length: $$A = 100^2 = 10000$$ cm\textsuperscript{2}. Final answers: - Perimeter: 400 cm - Area: 10000 cm\textsuperscript{2}