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Worksheets

Circles: Area and Circumferance

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

If the diameter is 7, what is the radius?

a)

3.5

b)

7

c)

14

d)

6.50

2.

If the radius is 15, what is the circumference?

a)

109.5492

b)

47.6446

c)

78.5832

d)

94.2478

3.

Sally has a round pool. The radius of the pool is 13. What is the circumference of the pool?

a)

345.67

b)

400.61

c)

530.93

d)

478.28

4.

If the diameter is 4, what is the area?

a)

11.75

b)

12.57

c)

4

d)

2

5.

What is the radius if the diameter is 631?

a)

315.5

b)

401.5

c)

298.5

d)

369.5

6.

Aaliyah is at her family barbecue. She sees a stack of plates. She calculated the radius, which was 5. She also calculated the area and rounded it by the nearest tenth. She got 70.12. Is that the right area?

a)

Yes

b)

No

7.

If the diameter is 19 inches, what is my radius?

a)

7.5 feet

b)

9.5 inches

c)

9.5 feet

d)

7.5 inches

8.

Does this show diameter or radius?

a)

Radius

b)

Diameter

9.

Does this show diameter or radius

a)

Radius

b)

Diameter

10.

What is the formula for circumference when given the diameter?

a)

C= 2 π r

b)

C= π r

c)

C= π d

d)

C= 2 π d

11.

What is the formula for circumference when given the radius?

a)

C= 2 π r

b)

C= π d

c)

C= π r

d)

C= 2 π d

12.

What is the formula for area?

a)

A= π d2

b)

A= π r

c)

A= 2 π r

d)

A= π r2

13.

The diameter of a circle is?

a)

The space inside of the circle.

b)

The distance from an edge of a circle to another edge through the center.

c)

The measurement around the circle.

d)

The distance from the center of the circle to an edge of a circle.

14.

The circumference of a circle is?

a)

The space inside of the circle.

b)

The distance from an edge of a circle to another edge through the center.

c)

The measurement around the circle.

d)

The distance from the center of the circle to an edge of a circle.

15.

The area of a circle is?

a)

The measurement around the circle.

b)

The space inside of the circle.

c)

The distance from the center of the circle to an edge of a circle.

d)

The distance from an edge of a circle to another edge through the center.

16.

What is the radius of the circle?

a)

The measurement around the circle.

b)

The distance from an edge of a circle to another edge through the center.

c)

The distance from the center of the circle to an edge of a circle.

d)

The space inside of the circle.

17.

What is the distance around a circle?

a)

Area

b)

Diameter

c)

Circumference

d)

Radius

18.

What is the space inside of the circle called?

a)

Area

b)

Circumference

c)

Diameter

d)

Radius

19.

Based on the picture, what is the area?

a)

41.5652

b)

68.5492

c)

25.1327

d)

50.2655

20.

Based on the picture, what is the area?

a)

104.5455

b)

78.5398

c)

59.4528

d)

29.5591