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Worksheets

Area of Circles and Sectors

Total questions: 15

Worksheet time: 53mins

Name
Class
Date
1.

What is the area of this circle?

a)

b)

c)

16π

d)

π

2.

What is the area of this circle?

a)

25π

b)

10π

c)

π

d)

3.

What is the area of this circle?

a)

12π

b)

c)

144π

d)

36π

4.

What is the radius of a circle with an area of 49π?

a)

49

b)

10

c)

7

d)

14

5.

Find the area of the shaded sector of circle O. The radius is 6 inches and the central angle is 100°. Express answer as an exact value

a)

5π/3

b)

10π/3

c)

10π

d)

40π

6.

What is the area of the shaded region? Round to the nearest hundredth.

a)

1.26

b)

452.39

c)

9.42

d)

113.10

7.

What is the area of the shaded region? Round to the nearest hundredth.

a)

8.37

b)

2.09

c)

33.49

d)

4.19

8.

What is the area of the shaded sector? Round your answer to the nearest hundredth.

a)

19.28

b)

163.85

c)

655.39

d)

None of these

9.

What is the area of the shaded sector? Round your answer to the nearest hundredth.

a)

13.96

b)

139.56

c)

27.91

d)

558.22

10.

A circular table top has an area of 324 square inches. Which measurement is closest to the radius of the table top in inches?

a)

10.2 in.

b)

18.0 in.

c)

56.5 in.

d)

103.1 in.

11.

FIND THE SECTOR AREA OUTLINED IN BOLD

a)

A

b)

B

c)

C

d)

D

12.

find the area of the circle below.

a)

100 cm

b)

225 cm

c)

9 cm

d)

28.26 cm

13.
Danielle wants to make a cookies for 3 friends. The radius of a cookie is 5 inches. If she wants to ice ALL 3 of the cookies, how many square inches of cookies must she cover with icing?
a)
47.1 in2
b)
235.5 in2
c)
78.5 in2
d)
15.7 in2 
14.

A circle has a circumference of 36π meters. What is the radius of the circle?

a)

36 meters

b)

6 meters

c)

12 meters

d)

18 meters

15.

Find the area of the shaded sector. Use 3.14 for pi. Round to the nearest tenth.

a)

7.9 units 2

b)

24.7 units2

c)

10.6 units2

d)

98.9 units2