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6th Grade - Radius, Diameter and Circumference

Total questions: 19

Worksheet time: 40mins

Name
Class
Date
1.

What is the circle's diameter?

a)

5 cm

b)

10 cm

c)

20 cm

2.
What is the diameter?
a)
5 in
b)
10 in
c)
3.14 in
d)
15.84 in
3.

What is the circle's radius?

a)

6 ft

b)

12 ft

c)

24 ft

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.
The radius of a circle is
a)
The measurement from the center of a circle to an edge of the circle.
b)
The measurement around the circle
c)
The measurement from and edge of the circle to another edge through the center
d)
A line perpendicular to the diameter of the circle
6.

What is the radius?

a)

70 cm

b)

35 cm

c)

140 cm

7.

If I want to cut this pizza in half, the line would be 16 in long. How far do I need to cut if I just want a slice from the center?

a)

32 in

b)

4 in

c)

12 in

d)

8 in

8.

The diameter of this wheel is 32 in, how long is the radius?

a)

64 in

b)

18 in

c)

16 in

d)

8 iin

9.
What is the circumference of a circle with a radius of 21 cm?
a)
131.88 cm
b)
121.99 cm
c)
111.89 cm
d)
141.89 cm
10.
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
11.

What is the formula for finding the circumference of a circle?

a)

C = r2

b)

C = rd

c)

A = π·r2

d)

C = π·d

12.

Find the circumference of the circle.

a)

31.4 cm

b)

78.5 cm

c)

314 cm

d)

15.7 cm

13.

Find the circumference of the circle.

a)

18.8 cm

b)

113 cm

c)

37.7 cm

d)

452.2 cm

14.
Determine the radius of the penny
a)
59.66 mm
b)
9.5 mm
c)
38 mm
d)
119.32 mm
15.
a)
37 in
b)
53.2 in
c)
74 in
d)
48 in
16.
Find the perimeter of the figure.  Use 3.14 for pi.
a)
20.56 in.
b)
17.3 in.
c)
17.8 in.
d)
31.88 in.
17.

Mrs. Wilson placed the welcome mat shown below on her front door step. What is the PERIMETER of her welcome mat in feet? Round to the nearest hundredth. Don't forget to label.

(a)  

18.

The stained glass window is a semicircle. What is the distance around the window? Round to nearest hundredth. Don't forget to label.

(a)  

19.

What is the perimeter of the semi-circle? Round to the nearest hundredth. Don't forget to label.

(a)