Circumference in terms of π

Leave π in your answer. Circumference = 2πr and area = πr².

1. A circle has a radius of 44 cm. Find its circumference. Give the answer in terms of π.
2. A circle has a radius of 29 cm. Find its circumference. Give the answer in terms of π.
3. A circle has a radius of 18 cm. Find its circumference. Give the answer in terms of π.
4. A circle has a radius of 48 cm. Find its circumference. Give the answer in terms of π.
5. A circle has a radius of 22 cm. Find its circumference. Give the answer in terms of π.
6. A circle has a radius of 17 cm. Find its circumference. Give the answer in terms of π.
7. A circle has a radius of 13 cm. Find its circumference. Give the answer in terms of π.
8. A circle has a radius of 55 cm. Find its circumference. Give the answer in terms of π.
9. A circle has a radius of 79 cm. Find its circumference. Give the answer in terms of π.
10. A circle has a radius of 88 cm. Find its circumference. Give the answer in terms of π.
11. A circle has a radius of 30 cm. Find its circumference. Give the answer in terms of π.
12. A circle has a radius of 19 cm. Find its circumference. Give the answer in terms of π.
13. A circle has a radius of 74 cm. Find its circumference. Give the answer in terms of π.
14. A circle has a radius of 94 cm. Find its circumference. Give the answer in terms of π.
15. A circle has a radius of 60 cm. Find its circumference. Give the answer in terms of π.
16. A circle has a radius of 118 cm. Find its circumference. Give the answer in terms of π.
17. A circle has a radius of 83 cm. Find its circumference. Give the answer in terms of π.
18. A circle has a radius of 90 cm. Find its circumference. Give the answer in terms of π.
19. A circle has a radius of 54 cm. Find its circumference. Give the answer in terms of π.
20. A circle has a radius of 8 cm. Find its circumference. Give the answer in terms of π.