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Circumference

Total questions: 13

Worksheet time: 39mins

Name
Class
Date
1.

The definition of radius is

a)

distance from one point to another point

b)

distance around the circle

c)

distance from the center to any point on the circle

d)

distance across the circle through the center

2.

The definition of diameter is

a)

distance from the center of any point on the circle

b)

distance across the circle through the center

c)

distance from one point to another

d)

distance around the circle

3.

The definition of circumference is

a)

distance from the center of any point on the circle

b)

distance from one point to another

c)

distance around the circle

d)

distance from the center of any point on the circle

4.
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. 
5.
If my radius is 10ft, what is my diameter?
a)
20ft
b)
5ft
c)
31.4ft
d)
62.8ft
6.
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
7.
what is the circumference of this circle ?
a)
3.14 cm 
b)
37.68 cm
c)
24 cm
d)
68.4 cm
8.
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
9.
What is the circumference?
a)
36
b)
18pi
c)
108pi
d)
36pi
10.
Daniel wants to buy cookies for her friend. The radius of a cookie is 5 inches. What is the cookie’s circumference?
a)
10 in
b)
2.5 in
c)
15.7 in
d)
31.4 in 
11.

Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference (use 3 for pi)?

a)

11.32 ft

b)

12.25 ft

c)

10.5 ft

d)

8.75 ft

12.
Which shows the diameter?
a)
A
b)
B
c)
C
d)
D
13.
What is the perimeter of the semi-circle?
a)
11 yd
b)
17.27 yd
c)
34.54 yd
d)
28.27 yd