Free Printable Review (Unit conversion, circumference and area of circles)

Worksheets

Review (Unit conversion, circumference and area of circles)

Total questions: 26

Worksheet time: 52mins

Name

Class

Date

1 $cm^2$ =__________ $mm^2$

100

1 000

10 000

141 $cm^2$ =__________ $mm^2$

1 410

14 100

141 000

1 414 000

250 000 $cm^2$ =__________ $m^2$

2 500

0.25

0.025

Convert 1653m to km

165300

1.653

165300m

1.653km

What is the definition of perimeter?

The total area of a 2D shape.

The distance between two points on a 2D shape.

The measurement of the space inside a 2D shape.

The total length of the boundary of a 2D shape.

1km =

1000cm

1000m

100cm

100m

700 cm = (a) m

4.5 km = ________ m

4.5

4 005

4 500

709 cm = ________ m

0.709

7.09

7.9

70.9

10.

What does C represent in the formula:

C = π·d

Circumference

Diameter

Area

11.

What does d represent in the formula:

C = π·d

diameter

radius

3.14

12.

What is the diameter of a circle?

the distance around a circle

the area of a circle

halfway through a circle

a line through the center of a circle

13.

What number represents π?

31.4

4.13

3.14

34.1

14.

Find the circumference of the circle.

31.4 cm

78.5 cm

314 cm

15.7 cm

15.

Find the circumference of the circle.

78.5 cm

15.7 cm

7.85 cm

19.6 cm

16.

Is the red line a radius or diameter of the circle?

Radius

Diameter

17.

A ball has a circumference of 9.42 cm. What is the diameter?

29.5788 cm

59.1576 cm

3 cm

1.5 cm

18.

What is the diameter?

8cm

16cm

10cm

4cm

19.

What is the area of this circle?

50.27 cm²

78.23 cm²

98.12 cm²

201.06 cm²

20.

What is the area of a circle with a diameter of 12cm?

452.39cm²

139.12cm²

113.1cm²

84.23cm²

21.

A DVD has a diameter of 15 millimeters. Which equation would help you determine the distance around the DVD?

C = 15π

A = π7.5²

A = 15 ÷ π

C = 7.5π

22.

Jake's cow is tied to a beanstalk with a piece of rope that is 15ft long. What is the area of the circle in which the cow can graze?

47.1 ft.

176.7 ft²

706.9 ft²

94.2 ft

23.

A Circle has a radius of 4. What is the circumference of the circle? (Best Choice)

4π or about 12.56

16π or about 50.24

2π or about 6.28

8π or about 25.12

24.

What is the area of this circle?

50.27 cm²

78.23 cm²

98.12 cm²

201.06 cm²

25.

The homeowners association wants to enclose a circular playground in a fence. The need to find the amount of fencing they need to purchase. Will they need the area or circumference of the playground?

area

circumference

neither

26.

A Circle has a diameter of 10 centimeters. What is the area of the circle? (Best Choice)

5π or about 15.7 cm²

10π or about 31.4 cm²

25π or about 78.5 cm²

100π or about 314 cm²

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Review (Unit conversion, circumference and area of circles)

Total questions: 26

Worksheet time: 52mins

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