Unit 3 Review

Radius/Diameter

100

If the radius is 5 what is the diameter?

10

200

If the diameter is 42 what is the radius?

21

300

If the radius is 35, what is the diameter?

70

400

If the radius is 20 what is the diameter?

40

500

If the diameter is 56 what is the radius?

28

Circumference

100

Find circumference: When radius = 5

31.4

200

Find Circumference with a diameter of 14. 

43.96

300

Find Circumference when Radius = 25

157

400

Find Circumference when diameter is 22. 

69.08

500

Find the radius if the circumference is 471. 

75

Area

100

Find Area when Radius = 4

50.24

200

Find Area when diameter is 100

7850

300

Find Area when Radius = 21

1,384.74

400

Find Area when diameter is 70. 

3,846.5

500

Find the area if the circumference is 150.72. 

1808.64

Word Problems

100

The radius of a carousel is 3.5 yards. What is the distance around the carousel? 

21.98 yards. 

200

A circular park has a radius of 250 m. How much space does the park take up? 

196,250 m² 

300

Sally created a flower bed that has a diameter of 11 meters. How much room does the flower bed have? 

94.985 m² 

400

The distance around the wheel of a truck is 9.42 ft. What is the diameter of the wheel?

3 ft

500

A path goes around a circular piece of lawn at the park. If the path is 131. 88 ft, how much space is there inside the path? 

1,384.74 ft² 

Mixed Review

100

What is the area of a circle with a diamater of 6?

28.26

200

What is the circumference of a circle with a radius of 19?

119.32

300

What is the circumference of a circle with a diameter of 20?

62.8

400

What is the area of a circle with a diameter of 22?

379.94

500

What is the area of a circle with a radius of 32?

3,215.36