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Circles (Parts of Circle and Circumference/Diameter)

Total questions: 31

Worksheet time: 3hrs 35mins

Name
Class
Date
1.
What is the diameter?
a)
8
b)
16
c)
10
d)
4
2.
What do we call the red line?
a)
Chord
b)
Arc
c)
Diameter
d)
Segment
3.
What is the name for the distance around a circle?
a)
Diameter
b)
Radius
c)
Circumference
d)
Chord
4.
What is CB?
a)
diameter
b)
center
c)
circumference
d)
radius
5.
The distance across a circle through the center is called the_______________.
a)
radius
b)
circumference
c)
diameter
d)
area
6.
What is the radius if the diameter is 12 m ?
a)
24 m
b)
6 m
c)
4 m
d)
48 m
7.
What is the diameter of a circle with a radius of 10 in?
a)
20
b)
5
c)
40
8.

Steven purchases a bowl. The diameter of the

bowl is 14 cm. What is the circumference of the

bowl?

a)

28 cm

b)

43.96 cm

c)

87.96 cm

d)

7 cm

9.

Daniel wants to buy cookies for her friend. The

radius of a cookie is 5 cm. What is the cookie’s

circumference?

a)

10 cm

b)

2.5 cm

c)

15.7 cm

d)

31.4 cm

10.
Cynthia wants to buy a round photo frame for
her brother. The radius of the photo frame is 9 cm. 
What is the photo frame’s diameter?
a)
28.26 cm
b)
56.52 cm
c)
4.5 cm
d)
18 cm
11.
what is the circumference of this circle ?
a)
3.14 cm 
b)
37.7 cm
c)
24 cm
d)
68.4 cm
12.
Find the circumference (to the nearest whole number)
a)
88 in
b)
44 in
c)
116 square in
d)
None of the above
13.
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
14.
The Jones family wants to enclose their circular garden with a fence. To the nearest foot, what is the minimum length of fencing they need to buy?
a)
56.25 ft
b)
246 ft
c)
365 ft
d)
393 ft
15.
A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?
a)
c = 15π
b)
C = 2π15
c)
c = 15/π
d)
c = 15/2π
16.
What are the first 5 digits of PI (π)?
a)
3.1459
b)
3.141
c)
6.2831
d)
3.1415
17.
What is this?
a)
PI
b)
Pizza
c)
Brownies
d)
Pie
18.
What is this?
a)

Pie

b)

Square Root

c)

Pi

d)

Sine

19.

What is the "formal" definition of pi?

a)

22/7

b)

3.1415926

c)

the circle's circumference divided by its diameter

d)

the surface area of a sphere of diameter 22/7

20.
How many digits are in pi?
a)
10 trillion
b)
5 billion 
c)
infinite 
d)
a lot 
21.
Pi is the ratio of a circle’s _________ to _________. 
a)
radius/diameter
b)
circumference/diameter
c)
area/circumference
d)
circumference/radius
22.

Round 9.715 to the nearest tenth.

a)

9.7

b)

9.72

c)

9.70

d)

10

23.

Round 71.5977 to the nearest tenth

a)

71.6

b)

71.5

c)

70

d)

71.598

24.

Round 113.899 to the nearest hundredths.

a)

113.89

b)

113.80

c)

113.90

d)

113.9

25.

Round 29.215 to the nearest whole number

a)

29

b)

20

c)

30

d)

28

26.

Round 1 137.84936 to the nearest whole number

a)

1,137.8

b)

1,137.9

c)

1,137

d)

1,138

27.
Rounding rules are ...4 or less...
a)
is the best!
b)
is out west!
c)
let it rest!
d)
is a pest!
28.
Rounding rules are...5 or more
a)
get on all 4's!
b)
close the door!
c)
raise the score!
d)
roll on the floor!
29.
Round 10.065 to the nearest tenth place.
a)
10
b)
10.1
c)
10.07
d)
10.17
30.

Round 72.178 to 2 decimal places.

a)

72.2

b)

72.18

c)

72

d)

73.18

31.

Round 47.941 to 1 decimal place.

a)

47.9

b)

48

c)

47.91

d)

48.1

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