Geometry – Chapter 9 Test Review – Circles All questions worth 1 point each, unless otherwise stated. Total 39 points.

Find the value of x in each figure. Any point “C” is the center of the circle. 30°

1.

7.

150°

3

13.

x° x°

4

C

C

x

20°

x

8.

2. 40°

14.

x° 15

80°

40°

50° x°

3.

x°

9.

15.

100° 8

120°

x° x

150°

100° 210°

4.

x°

16.

10.

C

x°

x°

30°

160°

80° C 200°

5.

x

4

17.

85°

11.

12

x°

C

C x 115°

95°

6.

160°

12.

x

5

C

5 x°

C

160°

18.

12

x°

12 5

200°

0

Find the length of the arc, and the area of the sector.(2 points each)_ 19.

.

.

r

20.

.

21.

.

.

22.

. .

.

23. Draw two circles and a common tangent. or

Review. Find the area or surface area of each figure/shaded region. 32.

24.

5

9

√

28. 10

9

√

12 √

33.

14

25. l

11

29.

.

(2 pts)

12

34.

or

10

5 8

6

15

or

30.

26.

6

35.

3

4 6

12

4

7

8

27.

Sphere

31.

5

8

4√ 8

4

√

√ or 166.277

or

.

.