4. Segments

5. A. Name the circle and identify a radius.

6. If RT = 21 cm, what is the length of QV? RT is a diameter and QV is a radius.

10. A.3 in. B.5 in. C.7 in. D.9 in.

11. A.3 in. B.5 in. C.7 in. D.9 in.

13. A series of crop circles was discovered in Alberta, Canada, on September 4, 1999. The largest of the three circles had a radius of 30 feet. Find its circumference.

14. Answer: The circumference of the crop circle is 60  feet or about 188.50 feet.

15. A.377.0 feet B.392.5 feet C.408.3 feet D.422.1 feet The Unisphere is a giant steel globe that sits in Flushing Meadows-Corona Park in Queens, New York. It has a diameter of 120 feet. Find its circumference.

16. A.377.0 feet B.392.5 feet C.408.3 feet D.422.1 feet The Unisphere is a giant steel globe that sits in Flushing Meadows-Corona Park in Queens, New York. It has a diameter of 120 feet. Find its circumference.

17. Circumference of Circumscribed Polygon

18. A. B. C. D.

19. A. B. C. D.