1. Radius = 5, Diameter = 10, Area = 78.5, Circumference = 31.4
2. Radius = 6, Diameter = 12, Area = 113.04, Circumference = 37.68
3. Radius = 8, Diameter = 16, Area = 200.96, Circumference = 50.24
4. Radius = 7, Diameter = 14, Area = 153.86, Circumference = 43.96
5. Radius = 9, Diameter = 18, Area = 254.34, Circumference = 56.52
6. Radius = 10, Diameter = 20, Area = 314, Circumference = 62.8
7. Radius = 3, Diameter = 6, Area = 28.26, Circumference = 18.84
8. Radius = 4, Diameter = 8, Area = 50.24, Circumference = 25.12
9. Radius = 11, Diameter = 22, Area = 379.94, Circumference = 69.08
Parent Tip: Review the logic above to help your child master the concept of circumference practice worksheet.