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# Working With Circles and Circular Figures Practice Questions

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Updated on Apr 25, 2014

Review the following concept if necessary: Working With Circles and Circular Figures Study Guide.

## Working With Circles and Circular Figures Practice Questions

### Problems

Find the approximate circumference of each circle shown or described. Use 3.14 for π.

1. d = 7 m
2. r = 25 m

Find the approximate area for each circle shown or described. Use 3.14 for π.

1. r = 13 cm
2. d = 24 in

Find the surface area of each cylinder. Use 3.14 for π.

1. Cylinder: r = 6 ft., h = 16 ft.
2. Cylinder: d = 18 cm, h = 3 cm

Find the volume of each cylinder shown or described. Use 3.14 for π.

1. Cylinder: r = 3 ft., h = 12 ft.
2. Cylinder: d = 22 ft., h = 12 ft.

Find the volume of each cone shown or described. Use 3.14 for π.

Find the surface area of each sphere shown or described. Use 3.14 for π.

1. Sphere: r = 16 cm
2. Sphere: r = 20 ft.

Find the volume of each sphere. Use 3.14 for π.

1. Sphere: r = 12 m
2. Sphere: d = 9 ft.

1. 47.1 ft.
2. 69.08 in.
3. 21.98 m
4. 157 m
5. c = 25.12 cm
6. 78.5 ft.2
7. 200.96 m2
8. 530.66 cm2
9. 452.16 in.2
10. 12.56 cm2
11. 81.64 cm2
12. 747.32 in.2
13. 828.96 ft.2
14. 678.24 cm2
15. 1,271.7 cm3
16. 339.12 m3
17. 339.12 ft.3
18. 4,559.28 ft.2
19. 100.48 m3
20. 340.17 in.3
21. 452.16 cm3
22. 256.43 ft.3
23. 615.44 m2
24. 803.84 in.2
25. 3,215.36 cm2
26. 5,024 ft.2
27. 523.3 m3
28. 1,436.03 in.3
29. 7,234.56 m3
30. 381.51 ft.3

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