The Oldcastle 14200785 Curved Scallop Edger is 16 inches long2. To create a circle, you would need to calculate the circumference and divide it by the length of each paver. For example, if you want to create a circle with a diameter of 3 feet (36 inches), the circumference would be approximately 113 inches (using the formula 𝐶=𝜋×𝑑). Dividing 113 inches by 16 inches (the length of each paver), you would need about 7 pavers to complete the circle.