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Geometry
Math
Grade 6 Math

 

Name _____________________________
Date ___________________
Area and Circumference of a Circle
To the nearest tenth, find the circumference. Use 3.14 for .
1.  
ZJ
  =  37 ft
2.  
CH
  =  10 cm
3.  
TL
  =  88 in
4.  
BZ
  =  61 mm

Find the circumference. Use 
22

7
 for .

5.  
BH
  =  
11
1

4
 ft
6.  
HY
  =  
9
1

5
 cm
7.  
LX
  =  
24
1

2
 mm
8.  
UF
  =  
6
2

3
 in

Find the circumference. Use 
22

7
 for .

9.  
radius  =  
13
2

3
 cm


10.  
diameter  =  
20
1

5
 ft


11.  
diameter  =  
3
1

4
 mm


12.  
radius  =  
26
1

2
 in



 

Key #2
Write each perfect square as a square root.
13.   49

14.   121

15.   16

16.   529

17.   256

18.   9

19.   64

20.   169

21.   441

22.   625

23.   289

24.   81


Find the value of n.
25.  
  
121
  =  n

26.   152  =  n
27.  
  
n
  =  5

28.   n2  =  256
29.  
  
289
  =  n

30.   n2  =  400
31.   132  =  n
32.  
  
n
  =  18

33.  
  
n
  =  4

34.   142  =  n
35.  
  
81
  =  n

36.   n2  =  576

Circle the number that is the best estimate of the square root.
37.  
129

  12.2  10.8  11.4  12.3
38.  
102

  9.4  10.3  10.1  10.5
39.  
30

  6.1  5.5  4.7  5.3
40.  
15

  4.6  3.9  4.9  3.6

To the nearest tenth, find the area of each circle. Use 3.14 for .
41.  
TE
  =  22 in
42.  
DR
  =  3 mm
43.  
RP
  =  40 ft
44.  
HY
  =  19 cm

 

Key #2
To the nearest tenth, find the area of each circle. Use 3.14 for .
45.  
KD
  =  38.8 mm
46.  
VR
  =  22.98 cm
47.  
UV
  =  26.925 ft
48.  
XN
  =  29.242 in

Find the area of each circle. Use 
22

7
 for .

49.  
DK
  =  
7
1

3
 cm
50.  
DX
  =  
2
2

3
 ft
51.  
WH
  =  
3
1

2
 ft
52.  
HF
  =  
9
1

2
 cm

To the nearest tenth, find the area of each circle. Use 3.14 for .
53.  
diameter  =  22 mm


54.  
radius  =  11 in


55.  
diameter  =  25 ft


56.  
radius  =  9 cm



To the nearest tenth, find the area of each circle. Use 3.14 for .
57.  
radius  =  6.541 ft


58.  
diameter  =  44.4 cm


59.  
diameter  =  25.43 in


60.  
radius  =  38.7 mm



 

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

7
 for .

61.  
radius  =  
2
1

2
 ft


62.  
diameter  =  
8
1

2
 cm


63.  
radius  =  
6
3

4
 mm


64.  
diameter  =  
5
1

2
 mm



Find the area of the partial circle. Use 
22

7
 for .

65.  
radius  =  21 mm
Find the area of  
6

7
  of the circle
66.  
diameter  =  14 ft
Find the area of  
1

6
  of the circle
67.  
diameter  =  16 cm
Find the area of  
2

3
  of the circle
68.  
radius  =  7 in
Find the area of  
1

3
  of the circle

Find the area of each circle. Use 
22

7
 for .

69.  
radius  =  
2
2

3
 cm


70.  
diameter  =  
9
1

2
 in


71.  
radius  =  
8
1

2
 mm


72.  
radius  =  
8
1

2
 cm



 


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Geometry
Math
Grade 6 Math