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Circle Basics

Total questions: 50

Worksheet time: 8hrs 20mins

Name
Class
Date
1.

The radius ....

a)

A. DI

b)

B. IR

c)

C. RI

d)

C. BD

2.

Radius of this circle is ....

a)

A. 6 cm

b)

B. 6 m

c)

C. 24 cm

d)

D. 24 m

3.

Find the diameter!

a)

A. 18 km

b)

b. 4.5 m

c)

C. 18 m

d)

D. 27 m

4.

The radius of this circle is ....

a)

A. 32 m

b)

B. 32 m

c)

C. 8 m

d)

D. 8 km

5.

The radius of this circle is ....

a)

A. 15 cm

b)

B. 20 mm

c)

C. 10 mm

d)

D. 15 mm

6.

The radius of this circle is .....

a)

A. 12 km

b)

B. 13 km

c)

C. 14 km

d)

D. 15 km

7.

What is the measurement around the outside of a circle called?

a)

Diameter

b)

Circumference

c)

Radius

d)

Center

8.
Is the red line a radius or diameter of the circle?
a)
Radius
b)
Diameter
9.
Is the red line a radius or diameter of the circle?
a)
Radius
b)
Diameter
10.

Find the circumference of this circle

a)

31.4 in

b)

5 in

c)

20 in

d)

3.14 in

11.

Find the circumference of this circle

a)

23.4 in

b)

73.476 in

c)

11.7 in

d)

94.523 in

12.

Find the circumference of this circle

a)

25.12 yd

b)

12.56 yd

c)

4 yd

d)

24 yd

13.

Find the circumference of the circle.

a)

38.47 cm

b)

10.99 cm

c)

43.96 cm

d)

21.98 cm

14.

Find the circumference of the circle.

a)

78.5 cm

b)

15.7 cm

c)

7.85 cm

d)

19.6 cm

15.
The radius of the circle is 9 meters.  What is the circle's circumference?
a)
9 meters
b)
28.26 meters
c)
56.52 meters
d)
18 meters
16.

Find the circumference of the circle

a)

18.84 cm

b)

75.36 cm

c)

37.68 cm

17.
What does "circumference" mean?
a)
Space a circle takes up
b)
Distance around a circle
c)
Line from one side of a circle to another
d)
Line from center of circle to side
18.
Steven purchases a bowl. The diameter of the
bowl is 14 cm. What is the circumference of the 
bowl?
a)
28 cm
b)
43.98 cm
c)
87.96 cm
d)
7 cm
19.
If my diameter is 19 inches, what is my radius?
a)
38 inches
b)
9.5 inches
c)
59.66 inches
d)
119.32 inches
20.

To find the circumference of a circle, you must multiply the ________________ by 3.14.

a)

circumference

b)

area

c)

radius

d)

diameter

21.
Which of the following names a radius?
a)
segment AC
b)
segment DB
c)
segment AB
d)
segement BC
22.
Which of the following names a diameter?
a)
segment AC
b)
segment DB
c)
segment AB
d)
segment BC
23.
What is circumference?
a)
The distance around a circle.
b)
The space inside the circle.
c)
A line from side to side passing through the center.
d)
A line from the center to the side.
24.
What is the area of a circle?
a)
The distance around a circle.
b)
The space inside the circle.
c)
A line from side to side passing through the center.
d)
A line from the center to the side.
25.
Which segment is the diameter?
a)
AC
b)
BD
c)
LM
d)
CE
26.

What number represents π?

a)

31.4

b)

4.13

c)

3.14

d)

34.1

27.

Find the circumference of the circle.

a)

31.4 cm

b)

78.5 cm

c)

314 cm

d)

15.7 cm

28.

Find the circumference of the circle.

a)

78.5 cm

b)

15.7 cm

c)

7.85 cm

d)

19.6 cm

29.

Find the circumference of the circle.

a)

38.47 cm

b)

10.99 cm

c)

43.96 cm

d)

21.98 cm

30.

Find the circumference of the circle.

a)

14.13 cm

b)

63.56 cm

c)

28.26 cm

d)

127.17 cm

31.
What is the radius of this circle?
a)
18
b)
10
c)
9
d)
8
32.
Find the area of the circle
a)
43.96
b)
153.86
c)
87.82
d)
307.72
33.
What is the area of this circle?
a)
6082.12
b)
1520.53
c)
1893.14
d)
1292.92
34.

Is the red line a radius or diameter of the circle?

a)

Radius

b)

Diameter

35.

The distance halfway across the circle is called the...

a)

radius

b)

diameter

c)

circumference

d)

area

36.
Is the red line a radius or diameter of the circle?
a)
Radius
b)
Diameter
37.
What is the diameter of this circle?
a)
3.5
b)
6.5
c)
6
d)
7
38.
What is the circumference of a circle with a diameter of 40 in? 
a)
125.6 in
b)
35.17 in
c)
28.67 in
d)
47.17 in
39.
What is the circumference of a circle with a radius of 21 cm?
a)
131.9 cm
b)
121.9 cm
c)
111.9 cm
d)
141.9 cm
40.
A minute hand (radius) of a clock is 13.8 meters long. What is the circumference of the clock?
a)
86.66 meters
b)
76.66 meters
c)
66.66 meters
d)
96.66 meters
41.
What is the circumference of a circle with a diameter of 56 m?
a)
175.8 m
b)
176.8 m
c)
165.8 m
d)
186.8 m
42.
The diameter of a circle is:
a)
The measurement around the circle.
b)
The distance from an edge of a circle to another edge.
c)
The distance from the center of the circle to an edge of a circle
d)
The distance from an edge of a circle to another edge through the center. 
43.
The circumference of a circle is
a)
The measurement from an edge of a circle to another edge.
b)
The measurement around the circle
c)
The measurement from an edge of a circle to another edge going through the center
d)
The measurement from the center of the circle to an edge of the circle
44.
Find the circumference of a circle with a radius of 12.5 mm .
a)
37.68mm
b)
18.84mm
c)
78.5mm
d)
none of the above
45.
Find the area of the circle
a)
43.96
b)
153.86
c)
87.82
d)
307.72
46.
find the area of the circle below.
a)
100 cm
b)
225 cm
c)
9 cm
d)
28.26 cm
47.
What is π ? (Best Choice)
a)
The ratio of the circumference of any circle to its diameter.
b)
Exactly 3.14
c)
Exactly 3.1415
d)
Exactly 3.141593
48.
what is the circumference of this circle ?
a)
3.14 cm 
b)
37.68 cm
c)
24 cm
d)
68.4 cm
49.
What is the diameter of this circle?
a)
3.5
b)
3
c)
5
d)
7
50.
A Circle has a radius of 4.  What is the area of the circle? (Best Choice) (note: units are squared)
a)
4π or about 12.56
b)
16π or about 50.24
c)
2π or about 6.28
d)
8π or about 25.12

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