Circles Properties Practice

All 20 Practice Problems

Every question in this set. Solve them on paper, or use the interactive tool above for instant feedback and hints.

1. 1.Circle: radius=7. Diameter = ?
2. 2.Circle: diameter=20. Radius = ?
3. 3.Circle: radius=5. Circumference = ? (use π=3.14)
4. 4.Circle: diameter=10. Circumference = ? (use π=3.14)
5. 5.Circle: radius=4. Area = ? (use π=3.14)
6. 6.Circle: radius=3. Circumference = ? (use π=3.14)
7. 7.Circle: diameter=14. Circumference = ? (use π=3.14)
8. 8.Circle: radius=6. Area = ? (use π=3.14)
9. 9.Circle: diameter=8. Area = ? (use π=3.14)
10. 10.Circle: circumference=31.4. Diameter = ? (use π=3.14)
11. 11.Circle: radius=10. Circumference = ? (use π=3.14)
12. 12.Circle: radius=2. Area = ? (use π=3.14)
13. 13.Circle: diameter=6. Circumference = ? (use π=3.14)
14. 14.Circle: radius=8. Area = ? (use π=3.14)
15. 15.Semicircle: radius=4. Perimeter = ? (use π=3.14)
16. 16.Circle: area=78.5. Radius = ? (use π=3.14)
17. 17.Circle: radius=9. Circumference = ? (use π=3.14)
18. 18.Circle: diameter=12. Area = ? (use π=3.14)
19. 19.Circle: circumference=62.8. Radius = ? (use π=3.14)
20. 20.Circle: radius=7. Area = ? (use π=3.14)