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Name _____________________________
Date ___________________
Area and Circumference of a Circle
To the nearest tenth, find the circumference. Use 3.14 for .
1.   * This is a pre-made sheet.
Use the link at the top of the page for a printable page.
2.  
HY
  =  82 in
3.  
MW
  =  79 ft
4.  
RV
  =  25 mm

Find the circumference. Use 
22

7
 for .

5.  
RN
  =  
22
2

3
 cm
6.  
GZ
  =  
25
1

2
 ft
7.  
VY
  =  
3
1

5
 mm
8.  
PD
  =  
14
1

4
 in

Find the circumference. Use 
22

7
 for .

9.  
radius  =  
8
2

5
 ft


10.  
diameter  =  
20
1

2
 mm


11.  
radius  =  
4
1

3
 cm


12.  
diameter  =  
29
1

2
 in



 

Key #2
aKey #2
Find the square root.
13.  
  
81

14.  
  
196

15.  
  
400

16.  
  
16

17.  
  
529

18.  
  
625

19.  
  
9

20.  
  
100

21.  
  
49

22.  
  
576

23.  
  
25

24.  
  
64


Find the value of n.
25.   242  =  n
26.   n2  =  324
27.  
  
361
  =  n

28.  
  
n
  =  21

29.  
  
n
  =  2

30.   172  =  n
31.  
  
144
  =  n

32.   n2  =  9
33.  
  
n
  =  16

34.   n2  =  100
35.  
  
225
  =  n

36.   112  =  n

Circle the number that is the best estimate of the square root.
37.  
72

  8.8  7.8  8.5  7.6
38.  
44

  6.4  6.8  7.2  6.6
39.  
6

  2.9  2.5  2.4  2.8
40.  
151

  12.3  11.8  11.3  12

To the nearest tenth, find the area of each circle. Use 3.14 for .
41.  
YX
  =  32 cm
42.  
SF
  =  12 mm
43.  
ZG
  =  15 ft
44.  
EH
  =  31 in

 

Key #2
aKey #2
To the nearest tenth, find the area of each circle. Use 3.14 for .
45.  
GE
  =  16.2 in
46.  
VU
  =  3.846 mm
47.  
PZ
  =  2.65 ft
48.  
UH
  =  45.843 cm

Find the area of each circle. Use 
22

7
 for .

49.  
GJ
  =  
2
1

3
 ft
50.  
UV
  =  
3
1

2
 mm
51.  
RU
  =  
8
2

3
 ft
52.  
XD
  =  
9
1

2
 cm

To the nearest tenth, find the area of each circle. Use 3.14 for .
53.  
diameter  =  25 mm


54.  
radius  =  31 in


55.  
diameter  =  17 ft


56.  
radius  =  4 cm



To the nearest tenth, find the area of each circle. Use 3.14 for .
57.  
radius  =  6.3 ft


58.  
radius  =  45.24 mm


59.  
diameter  =  33.904 in


60.  
diameter  =  35.447 cm



 

Key #2
aKey #2
Find the area of each circle. Use 
22

7
 for .

61.  
diameter  =  
8
2

3
 in


62.  
radius  =  
4
1

2
 cm


63.  
radius  =  
2
1

4
 ft


64.  
diameter  =  
3
1

2
 mm



Find the area of the partial circle. Use 
22

7
 for .

65.  
diameter  =  24 mm
Find the area of  
3

4
  of the circle
66.  
diameter  =  32 in
Find the area of  
4

7
  of the circle
67.  
radius  =  27 cm
Find the area of  
4

5
  of the circle
68.  
radius  =  35 ft
Find the area of  
4

9
  of the circle

Find the value of n.
69.   82  =  n
70.  
  
4
  =  n

71.   n2  =  25
72.  
  
n
  =  9

73.   142  =  n
74.   n2  =  36
75.  
  
n
  =  24

76.  
  
324
  =  n

77.  
  
n
  =  21

78.  
  
1
  =  n

79.   n2  =  625
80.   232  =  n

 


Answer Key


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