Area and Circumference of a Circle

1.

Multiple Choice

30 sec

1 pt

What is the circumference of a circle with a radius of 3 cm?

18.9 sq. cm

28.3 cm

18.9 cm

28.3 sq. cm

2.

Multiple Choice

3 mins

1 pt

Does this picture show the diameter or radius of a circle?

Diameter

Radius

3.

Multiple Choice

3 mins

1 pt

Does this picture show the diameter or radius of a circle?

Diameter

Radius

4.

Multiple Choice

3 mins

1 pt

The radius of the circle is 9 meters. What is the circle's circumference?

9 meters

28.26 meters

56.52 meters

18 meters

5.

Multiple Choice

3 mins

1 pt

What is the circumference of this circle? Round to the nearest tenth.

3.14 cm

37.7 cm

24 cm

68.4 cm

6.

Multiple Choice

3 mins

1 pt

If the diameter of a circle is 10 mm, the circumference is approximately ___

314 mm

3.14 mm

31.4 mm

20 mm

7.

Multiple Choice

3 mins

1 pt

Brian made a tasty burger. The diameter of the
burger was 5 cm. What is the radius of the circle?

15.7 cm

10 cm

2.5 cm

31.4 cm

8.

Multiple Choice

3 mins

1 pt

Find the area of the circle

43.96

153.86

87.82

307.72

9.

Multiple Choice

3 mins

1 pt

Find the area of the circle

56.52

254.34

1017.36

113.04

10.

Multiple Choice

3 mins

1 pt

find the area of the circle below.

100 cm

225 cm

9 cm

28.26 cm

11.

Multiple Choice

15 mins

1 pt

What is the circumference of a circle with a radius of 21 cm?

131.9 cm

121.9 cm

111.9 cm

141.9 cm

12.

Multiple Choice

3 mins

1 pt

Find the circumference of a circle with a radius of 13.5 mm.

37.68mm

18.84mm

84.78 mm

none of the above

13.

Multiple Choice

2 mins

1 pt

What is the circumference of a 12-inch pizza?

37.68 inches

18.84 inches

113.04 inches

432.16 inches

14.

Multiple Choice

1 min

1 pt

what is the area of this semicircle ?

d = 8 cm

100.48 cm²

80 cm²

200.96 cm²

25.12 cm²

15.

Multiple Choice

5 mins

1 pt

Solve.

78.5 cm²

100 cm²

21.5 cm²

121.5 cm²

16.

Multiple Choice

5 mins

1 pt

Solve.

386.97 cm²

122.5 cm²

50.3 cm²

102.4 cm²

17.

Multiple Choice

30 sec

1 pt

19 units

13 units

36 units

18 units

18.

Multiple Choice

2 mins

1 pt

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?

23.55 ft²

176.63 ft²

47.1 ft²

706.5 ft²

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