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Worksheets

Area Radius Diameter

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.
What is the radius?
a)
18
b)
72
c)
38
d)
14
2.
What is the diameter?
a)
5 in
b)
10 in
c)
3.14 in
d)
15.84 in
3.
Find the radius of a circle who's diameter is 40 ft.
a)
40ft
b)
80ft
c)
20ft
d)
45ft
4.

What is the circle's diameter?

a)

5 cm

b)

10 cm

c)

20 cm

5.

What is the circle's radius?

a)

5 cm

b)

10 cm

c)

20 cm

6.

What is the circle's radius?

a)

3 m

b)

6 m

c)

12 m

7.

What is the circle's diameter?

a)

3 m

b)

6 m

c)

12 m

8.

The radius of this circle is .....

a)

A. 25 cm

b)

B. 25 mm

c)

C. 50 cm

d)

D. 100 mm

9.

The radius of this circle is .....

a)

A. 12 km

b)

B. 13 km

c)

C. 14 km

d)

D. 15 km

10.

The radius of this circle is ....

a)

A. 15 cm

b)

B. 20 mm

c)

C. 10 mm

d)

D. 15 mm

11.
What is the area of this circle?
a)
201.06
b)
50.27
c)
123.12
d)
94.43
12.
What is the area of this circle?
a)
82.13
b)
78.54
c)
314.16
d)
170.12
13.

Find the area of the circle

a)

43.96 units2

b)

153.86 units2

c)

87.82 units2

d)

307.72units2

14.

What is the area of this circle?

a)

452.39 cm2

b)

139.12 cm2

c)

113.1 cm2

d)

84.23 cm2

15.
What is the area of this circle?
a)
163.2
b)
15.3
c)
124.2
d)
113.1
16.
Determine the radius of the penny
a)
59.66 mm
b)
9.5 mm
c)
38 mm
d)
119.32 mm
17.

Find the area of the circle.

a)

176.6 cm2

b)

706.5 cm2

c)

23.6 cm2

d)

50.24 cm2

18.

Find the area of the circle.

a)

803.84 cm2

b)

25.12 cm2

c)

50.24 cm2

d)

200.96 cm2

19.

What does r represent in the formula:

A = π·r2

a)

circumference

b)

radius

c)

diameter

d)

squared

20.

What number does π represent?

a)

4.13

b)

3.41

c)

pie

d)

3.14