List Each of the Following for Circle Q

CIRCUMFERENCE WORKSHEET

S T List each of the following for circle Q.

1. three radii 2. one diameter 3. two chords Q

______R

Find the unknown length for a circle with the given dimension.

4. r = 35 mi , d = ______5. d = 6.8 yd , r = ______

6. r = 18 ft , d = ______7. d = 0.25 km , r = ______

Find each circumference. Use 3.14 for .

8. 2 9. 13 yd in. C = ______C = ______

For questions 10-13, find the missing measurements for each circle, where r = radius, d = diameter and C = Circumference.

10. r = 3 mm, d = 6 mm, C = ______11. r = 4.5 mm, d =______, C= 28.26 yd

12. r = 0.62 in, d = ______, C = ______13. r = ______, d = ______, C = 47.1 yd

14. In an experiment, Abel measured a circle but separated the data from the labels. The data is 6.8 , 21.352 , 3.14 , and 3.4. The labels are Radius, Diameter, Circumference and Pi. Match the data items with the correct labels.

Radius = ______Diameter = ______Circumference = ______Pi = ______

15. You can find the diameter of a circle if you know its circumference. To find the circumference, you multiply  (pi) times the diameter. So, to find the diameter, divide the circumference by . a. Find the diameter of a circle with a circumference of 3.14 miles. ______

b. Find the diameter of a circle with circumference of 15.7 meters. ______

16. How would the circumference of a circle change if you doubled its diameter?

06aaa64216f3889be50e8029d3efe2ba.doc 17. The largest tree in the world has a diameter of about 26.5 feet at 4.5 feet above the ground. If a person with outstretched arms can reach 6 feet, how many people would it take to reach around the tree?

18. Draw a circle. Draw an example of a chord that is not a diameter.

19. Find the circumference of the circle to the nearest tenth. a. 26.7 cm b. 53.4 cm 8.5 cm c. 78.1 cm d. 106.8 cm

Write in expanded form.

20. 28 4 = ______21. 12 5 = ______

Find the perimeter and area of each polygon with the dimensions given.

22. Rectangle: 3.8 inches by 4.9 inches P = ______A = ______

23. Square: a 15.67 ft side P = ______A = ______

24. 14.3 m P = ______A = ______11.2 m 14.3 m 15.84 m 25. 15.3 in.

12.90 in. 14 in. P = ______A = ______

26. 10.7 cm

4.1 cm 14 cm P = ______A = ______

8.96 cm

27. An ice skater is following a path of two circles shaped like a figure eight. One loop has a diameter of 8 meters, and the other loop has a diameter of 10 meters. How far does the skater travel in one complete figure eight? Explain.

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