Free Printable Circles

1.

Find the circumference with a diameter of 18.4 km. Use 3.14 for pi.

a)

23.7 km

b)

57.8 km

c)

19.3 km

d)

59.1 km

2.

Find the circumference with a diameter of 6.8 m. Use 3.14 for pi.

a)

22.7 m

b)

31.5 m

c)

21.4 m

d)

25.8 m

3.

Find the circumference with a diameter of 15.2 km. Use 3.14 for pi.

a)

52.2 km

b)

47.7 km

c)

61 km

d)

57.9 km

4.

Find the circumference with a diameter of 14.8 m. Use 3.14 for pi.

a)

48.7 m

b)

104.4 m

c)

93 m

d)

46.5 m

5.

Find the circumference with a diameter of 23.4 m. Use 3.14 for pi.

a)

153.2 m

b)

73.5 m

c)

306.4 m

d)

76.6 m

6.

What is the radius?

a)

10 in

b)

5 in

c)

20 in

7.

What is the diameter?

a)

10 in

b)

5 in

c)

20 in

8.

What is the approximate circumference? (use 3.14 for pi)

(a)

9.

What is the radius?

a)

6 cm

b)

12 cm

c)

3 cm

10.

What is the diameter?

a)

6 cm

b)

12 cm

c)

3 cm

11.

What is the radius?

a)

100 mm

b)

50 mm

c)

25 mm

12.

What is the diameter?

a)

100 mm

b)

50 mm

c)

25 mm

13.

What is the approximate circumference? (use 3.14 for pi)

(a)

14.

What is the radius?

a)

10 ft

b)

5 ft

c)

20 ft

15.

What is the diameter?

a)

10 ft

b)

5 ft

c)

20 ft

16.

What is the approximate circumference? (use 3.14 for pi)

(a)

17.

What is the radius?

a)

9 in

b)

4.5 in

c)

18 in

18.

What is the diameter?

a)

9 in

b)

4.5 in

c)

18 in

19.

What is the approximate circumference? (use 3.14 for pi)

(a)

20.

What is the approximate circumference of a circle with a diameter of 34 in? (use 3.14 for pi)

(a)

21.

What is the approximate circumference of a circle with a diameter of 40 in? (use 3.14 for pi)

(a)

22.

What is the approximate circumference of a circle with a diameter of 22 in? (use 3.14 for pi)

(a)

23.

Find the circumference of a circle with a diameter of 20 m. Use 3.14 for pi.

a)

62.8 m

b)

31.4 m

c)

20.56 m

d)

15.7 m

24.

If the radius of a circle is 8 cm, the diameter is 16 cm.

a)

TRUE

b)

FALSE

25.

If the diameter of a circle is 10 cm, the radius is 5 cm.

a)

TRUE

b)

FALSE

26.

If my radius is 10ft, what is my diameter?

a)

20ft

b)

5ft

c)

31.4ft

d)

62.8ft

27.

A circle has a diameter of 36 ft. What is the radius?

a)

18

b)

72

c)

14

28.

What is the diameter of a circle if the radius is 8 cm?

a)

8 cm

b)

16 cm

c)

4 cm

29.

Find the radius of a circle who's diameter is 40 ft.

a)

40ft

b)

80ft

c)

20ft

d)

45ft

30.

If my diameter is 6, my radius is (a) .

31.

If my radius is 15, my diameter is (a) .

32.

The formula for the area of a circle is...

a)

$A=\pi d^2$

b)

$A=2\pi r$

c)

$A=\pi\cdot d$

d)

$A=\pi r^2$

33.

I can calculate the area of a circle given its radius or diameter.

What is the area of the circle shown? Round your answer to the nearest tenth.

a)

$425.2\ cm^2$

b)

$37.7\ cm^2$

c)

$75.4\ cm^2$

34.

I can calculate the area of a circle given its radius or diameter.

What is the area of the circle shown? Round your answer to the nearest tenth.

a)

$31.4\ cm^2$

b)

$15.5\ cm^2$

c)

$78.5\ cm^2$

35.

I can calculate the area of a circle given its radius or diameter.

What is the area of the circle shown? Round your answer to the nearest tenth.

a)

$12.6\ cm^2$

b)

$24.1\ cm^2$

c)

$50.2\ cm^2$

36.

I can calculate the area of a circle given its radius or diameter.

What is the area of the circle shown? Round your answer to the nearest tenth.

a)

$113\ cm^2$

b)

$36.7\ cm^2$

c)

$18.8\ cm^2$

37.

I can calculate the area of a circle given its radius or diameter.

If the diameter of a circle is 11 m, what is the area of the circle?

a)

$95\ m^2$

b)

$34.5\ m^2$

c)

$379.9\ m^2$

38.

12 inches in this circle represents its

a)

radius

b)

diameter

39.

14cm in the circle represents its

a)

radius

b)

diameter

40.

Find the circumference of the circle

a)

50.24 yd

b)

25.12 yd

c)

11.14 yd

41.

Find the circumference of the circle

a)

18.84 cm

b)

75.36 cm

c)

37.68 cm

42.

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

43.

Find the circumference of the circle.

a)

38.47 cm

b)

10.99 cm

c)

43.96 cm

d)

21.98 cm

44.

What is the Circumference of a Circle with a radius of 8 in terms of Pi.

a)

$8\pi$

b)

$12\pi$

c)

$15\pi$

d)

$16\pi$

e)

$4\pi$

Circles

Total questions: 44

Worksheet time: 3hrs 38mins

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