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 Name _____________________________ Date ___________________ Classify the number as rational, irrational, or not a real number.
 1 2 3.14159
3.
2   23

4.
 30.4439 0

 5 2.5
6.
-  -36

7.
 -729 49

8.  81

Find the circumference of each circle. State your answer in terms of and also round your answer to the nearest tenth.
9.

10.
 diameter = 41.18 mm

11.

12.
 diameter = 44 cm

13.

14.
 diameter = 20 mm

Complete.
 15 Bilko was so proud of his unique name that he had it printed on his cup. The cup had straight sides and a flat bottom. The sides were 5.5 inches high inside the cup and the diameter of the inside of the cup was 3.36 inches. What was the volume of the cup? Round your answer to the nearest hundredth.
 16 Julia and Cody are planning a garden. Julia said if they make the garden round it would look better. Cody said if they make the garden square they will be able to plant more. They have enough space to make a round garden with a diameter of seventeen feet or a square garden with each side being seventeen feet. If they put three plants in each square foot of ground, how many more plants will they be able to plant in the square garden than they could plant in the round garden?

 Key #2
 aKey #2
Find the area of each circle. State your answer in terms of and also round your answer to the nearest tenth.
17.
 diameter = 36.88 m

18.
 diameter = 50 mm

19.

20.

21.
 3 2
m

22.
 diameter = 44 m

Find the radius of the circle. (use = 3.14)
23.
 C  = 21.28 cm

24.
 A  = 12.56 m2

25.
 C  = 123.15 mm

26.
A  =
 1 16
m2

27.
 C  = 8 m

28.
 A  = 60.51 cm2

Find the volume of each solid to the nearest tenth. (use = 3.14)
29. a  = 47 in b  = 57 in

30. a  = 23 cm b  = 6 cm c  = 5 cm

31. a  = 13.5 km b  = 59.2 km

Find the volume of each solid to the nearest tenth. (use = 3.14)
32. a  = 5 in b  = 6 in c  = 5 in

33. a  = 7.4 ft b  = 10.1 ft

34. a  = 4 km

 Key #2
 aKey #2
Find the surface area of each solid to the nearest tenth. (use = 3.14)
35. a  = 1 cm b  = 17.1 cm

36. a  = 3 in b  = 14 in

37. a  = 17.7 mm b  = 14.5 mm c  = 14.5 mm

Complete.
 38 A cylinder can approximate the shape of a snake. Which snake would have the most volume, one that is 81 cm long and 12 cm in diameter, or one that is 39 cm long and 11 cm in diameter?
 39 How many 15-cm diameter chocolate chip cookies can be made using 881 chocolate chips if the chip density on the surface of each cookie is 0.7 per cm2?

Complete.
 40 Jacob is measuring the distance around some pine trees in the local state park. He is trying to find the biggest pine tree in the county. He finds several trees with circumferences greater than 1.5 meters. What is the minimum diameter of one of these trees? Round your answer to the nearest hundredth.
 41 How many 16-cm diameter chocolate chip cookies can be made using 882 chocolate chips if the chip density on the surface of each cookie is 0.7 per cm2? 