As you can see the green line segment is the diameter of the circle and it is the same length as the edge of the square, so the diameter of the circle is also 8 cm. Since the radius of the circle is one-half of the diameter the radius of the circle is 4cm. Area of square = side² = (8cm)² = 64 cm² Area of circle = pr² = (3.14)(4cm)² = (3.14)(16cm²) = 50.24 cm² Area of waste = Area of square - Area of circle = (64 cm²)-(50.24 cm²) = 13.76 cm² Edwin