[{"title": "Area of a Rectangle", "content": "Find the area of a rectangle with length 7 cm and width 7 cm. Area = length × width.", "solution": "A = 7 × 7 = 49 cm²"}, {"title": "Perimeter of a Rectangle", "content": "Find the perimeter of the same rectangle. P = 2(length + width).", "solution": "P = 2(7 + 7) = 2(14) = 28 cm"}]