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Area and Circumference of a Circle

Total questions: 78

Worksheet time: 3hrs 36mins

Name
Class
Date
1.
Does this picture show the diameter or radius of a circle?
a)
Diameter
b)
Radius
2.
Does this picture show the diameter or radius of a circle?
a)
Diameter
b)
Radius
3.
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
4.
What is the circumference of this circle?  Round to the nearest tenth.
a)
3.14 cm 
b)
37.7 cm
c)
24 cm
d)
68.4 cm
5.
what is the circumference of this circle ?
a)
3.14 cm 
b)
37.68 cm
c)
24 cm
d)
68.4 cm
6.
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
7.
What is the circumference? Round to the nearest whole number.
a)
48
b)
96
c)
24
d)
18
8.

The circumference of a circle is 31.4 feet. What is the diameter?

a)

10 ft

b)

5 ft

c)

15 ft

d)

7 ft

9.

The circumference of a circle is 25.12 inches. What is the diameter?

a)

5 inches

b)

7 inches

c)

8 inches

d)

9 inches

10.
What is the radius?
a)
18
b)
72
c)
38
d)
14
11.

The circumference of a circle is 37.68 meters. What is its radius?

a)

5 m

b)

6 m

c)

7 m

d)

8 m

12.

The circumference of a circle is 56.52 yards. What is its radius?

a)

6 yards

b)

9 yards

c)

15 yards

d)

18 yards

13.
What formula is this used for:
πr²
a)
Circumference 
b)
Area
c)
Surface Area
d)
Volume
14.
Find the area of the circle
a)
43.96
b)
153.86
c)
87.82
d)
307.72
15.
find the area of the circle below.
a)
100 cm
b)
225 cm
c)
9 cm
d)
28.26 cm
16.
What is the area of this circle?
a)
1385.44
b)
2142.12
c)
5541.77
d)
1289.12
17.
What is the area of this circle?
a)
163.2
b)
15.3
c)
124.2
d)
113.1
18.

What is the area of this circle?

a)

163.24 cm2

b)

15.32 cm2

c)

124.24 cm2

d)

113.04 cm2

19.
Find the area of the circle
a)
56.52
b)
254.34
c)
1017.36
d)
113.04
20.

A cruise ship has a large, circular window. It has a diameter of 8 meters. What is the window's area?

a)

31.25 m2

b)

29.55 m2

c)

30.36 m2

d)

50.27 m2

21.

Which best represents the circumference of a circle with a radius of 12 inches?

a)

37.68 inches

b)

75.36 inches

c)

62.14 inches

d)

27.14 inches

22.

Which best represents the area of a circle with a radius of 8 inches?

a)

200.96 inches

b)

50.24 inches

c)

192.14 inches

d)

31.4 inches

23.

The circumference of a circle is 36π36\pi  units, what is the radius ?

a)

19 units

b)

13 units

c)

36 units

d)

18 units

24.

The most popular size pizza at Pizza Parlor is a large pizza with a 12-inch radius. Which of the following best represents the circumference of this pizza?

a)

62.84 inches

b)

60 inches

c)

75.36 inches

d)

452.16 inches

25.
If my radius is 10ft, what is my diameter?
a)
20ft
b)
5ft
c)
31.4ft
d)
62.8ft
26.
A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's area?
a)
31.25 m2
b)
29.55 m2
c)
30.36 m2
d)
28.26 m2
27.

Does 7 inches represent the diameter or radius of the circle?

a)

Diameter

b)

Radius

28.
What is the distance around a circle?
a)
Circumference
b)
Area
c)
Diameter
d)
Radius
29.

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?

a)

11.32 ft

b)

12.25 ft

c)

10.99 ft

d)

8.75 ft

30.

What is the area of this circle?

a)

163.24 cm2

b)

15.32 cm2

c)

124.24 cm2

d)

113.04 cm2

31.
What formula is this used for:
πr²
a)
Circumference 
b)
Area
c)
Surface Area
d)
Volume
32.
What formula is this used for:
πd
a)
Area
b)
Circumference 
c)
Surface Area
d)
Volume 
33.
Radius 6 cm
What is the diameter? 
a)
36 cm
b)
12 cm
c)
6 cm
d)
3 cm 
34.
Diameter 32 inches
What is the radius?
a)
16 inches
b)
64 inches
c)
96 inches
96 inches
d)
16 ft 
35.
What formula is used to find the space 
"inside" a flat object?
a)
Circumference 
b)
Surface Area
c)
Area
d)
Volume
36.
Radius 5 in
Find the area of the circle.
a)
15.7 inches²
b)
31.4 inches²
c)
314 inches²
d)
78.5 inches²
37.
What formula is used to find the distance around a circle?
a)
Area
b)
Surface area
c)
Circumference
d)
Volume
38.
Diameter 14 inches
Find the area of a circle.
a)
615.44 in²
b)
153.86 in²
c)
43.96 in²
d)
87.92 in²
39.
Radius 4 inches
Find the circumference of the circle. 
a)
25.12 in
b)
12.56 in
c)
50.24 in
d)
200.96 in
40.
Diameter 13.5 in
Find the circumference of the circle.
a)
84.79 in
b)
42.39 in
c)
21.195 in
d)
572.265 in 
41.
A bicycle tire has a diameter of 20 inches. How many inches is one full revolution of the wheel?  
a)
31.4 in
b)
1256 in
c)
125.6 in
d)
62.8 in
42.
A circle pool has a radius of 7.5 ft. Monica wants to know how many ft of a pool cover she needs to buy?
a)
23.55 ft²
b)
176.63 ft²
c)
47.1 ft²
d)
706.5 ft²
43.
Ray wants to build a fence around his circular garden outside. The garden has a radius of 6 ft. How many feet of fencing does he need?
a)
37.68 ft
b)
18.84 ft
c)
113.04 ft
d)
452.16 ft
44.
Ray wants to build a fence around his circular garden outside. The garden has a radius of 6 ft. How many feet of fencing does he need?
a)
37.68 ft
b)
18.84 ft
c)
113.04 ft
d)
452.16 ft
45.
Trevor is making a tablecloth for a circular table with a diameter of 40 inches. How many inches of tablecloth does he need? 
a)
125.6 in²
b)
251.2 in²
c)
1256 ft²
d)
1256 in²
46.
If my radius is 10ft, what is my diameter?
a)
20ft
b)
5ft
c)
31.4ft
d)
62.8ft
47.
what is the circumference of this circle ?
a)
3.14 cm 
b)
37.68 cm
c)
24 cm
d)
68.4 cm
48.
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
49.
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
50.

What is the formula for finding the circumference for a circle with just the radius?

a)

2*π*r

b)

1/2 b*h

c)

a+b/2*h

d)

I do not know

51.
What is the formula for finding the circumstance of a circle with just the diameter?
a)
 π*d
b)
b*h
c)
l*w*h
d)
I do not know
52.
What is the area of this circle?
a)
163.2
b)
15.3
c)
124.2
d)
113.1
53.
What is the area of this circle?
a)
1385.44
b)
2142.12
c)
5541.77
d)
1289.12
54.
Does this picture show the diameter or radius of a circle?
a)
Diameter
b)
Radius
55.
Is the red line a radius or diameter of the circle?
a)
Radius
b)
Diameter
56.
If you multiply ½ × d  then you will get the...
a)
radius
b)
diameter
c)
circumference
d)
area
57.
If you are given the diameter, how can you calculate the radius?
a)
Multiply the diameter by 2
b)
Divide the diameter by 2
c)
Add 2 to the diameter
d)
Subtract 2 from the diameter
58.
If you multiply ½ × d  then you will get the...
a)
radius
b)
diameter
c)
circumference
d)
area
59.
Does this picture show the diameter or radius of a circle?
a)
Diameter
b)
Radius
60.
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
61.
Does this picture show the diameter or radius of a circle?
a)
Diameter
b)
Radius
62.
What is the circumference of a circle with a radius of 54 m?
a)
339.12 m
b)
169.56 m
c)
84.78 m 
63.
What is the circumference of this circle?  Round to the nearest tenth.
a)
3.14 cm 
b)
37.7 cm
c)
24 cm
d)
68.4 cm
64.
What is the circumference of this circle?  Round to the nearest tenth.
a)
3.14 cm 
b)
37.7 cm
c)
24 cm
d)
68.4 cm
65.
A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's approximate circumference?
a)
3 m 
b)
9.42 m
c)
12 m
d)
18.84 m
66.
If the diameter of a circle is 10 mm, the circumference is approximately ___
a)
314 mm
b)
3.14 mm
c)
31.4 mm
d)
20 mm
67.
Brian made a tasty burger. The diameter of the
burger was 5 cm. What is the radius of the circle?
a)
15.7 cm
b)
10 cm
c)
2.5 cm
d)
31.4 cm
68.
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. 
69.
Find the area of the circle
a)
43.96
b)
153.86
c)
87.82
d)
307.72
70.
find the area of the circle below.
a)
100 cm
b)
225 cm
c)
9 cm
d)
28.26 cm
71.
Shring's dining room table is round and has a radius of 4.5 feet. What is the tabletop's area?
a)
63.585 ft2
b)
68.345 ft2
c)
64.585 ft2
d)
61.345 ft2
72.

A cruise ship has a large, circular window. It has a diameter of 8 meters. What is the window's area?

a)

31.25 m2

b)

29.55 m2

c)

30.36 m2

d)

50.27 m2

73.
Ms. Catall is using a compass to find her way out of the woods. The compass has a radius of 4 centimeters. What is the compass's area?
a)
49.2 cm2
b)
45.6 cm2
c)
50.24 cm2
d)
55.9 cm2
74.

Find the area of a circle if you are given a diameter of 2.5 inches. Use 3.14 for π and round to the nearest tenths place

a)

5 inches2

b)

4.8 inches2

c)

4.89 inches2

d)

4.9 inches2

75.
The diameter of Carol's old records from the 80s is 12 inches. Which equation would help you determine the area?
a)
A = 12π
b)
A = 2π12
c)
A = π(12²)
d)
A = π(6²)
76.
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
77.
If my radius is 10ft, what is my diameter?
a)
20ft
b)
5ft
c)
31.4ft
d)
62.8ft
78.
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

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