11-Circumference and Area of Circles

[Pages:4]Kuta Software - Infinite Geometry

Name___________________________________

Circumference and Area of Circles

Date________________ Period____

Find the area of each. Use your calculator's value of . Round your answer to the nearest tenth.

1)

2)

12 in

14 km

3)

9 m

5) radius = 2.6 in

4)

11 cm

6) radius = 34.1 in

7) radius = 13.2 km

8) radius = 29.9 km

Find the circumference of each circle. Use your calculator's value of . Round your answer to the nearest tenth.

9)

10)

8.3 yd

8 mi

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Worksheet by Kuta Software LLC

11)

12)

4.2 yd

6.2 mi

13) radius = 5.2 ft

14) radius = 11.1 ft

15) radius = 9.5 in

16) radius = 9.3 in

Find the radius of each circle. Use your calculator's value of . Round your answer to the nearest tenth.

17) circumference = 62.8 mi

18) circumference = 69.1 yd

19) circumference = 12.6 yd

20) circumference = 25.1 ft

Find the diameter of each circle. Use your calculator's value of . Round your answer to the nearest tenth.

21) area = 201.1 in?

22) area = 78.5 ft?

Find the circumference of each circle. 23) area = 64 mi?

24) area = 16 in?

Find the area of each. 25) circumference = 6 yd

26) circumference = 22 in

Critical thinking question:

27) Find the radius of a circle so that its area and circumference have the same value.

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Worksheet by Kuta Software LLC

Kuta Software - Infinite Geometry

Name___________________________________

Circumference and Area of Circles

Date________________ Period____

Find the area of each. Use your calculator's value of . Round your answer to the nearest tenth.

1)

2)

12 in

452.4 in?

3)

14 km

615.8 km?

4)

11 cm

9 m

254.5 m? 5) radius = 2.6 in

21.2 in?

380.1 cm?

6) radius = 34.1 in 3653.1 in?

7) radius = 13.2 km 547.4 km?

8) radius = 29.9 km 2808.6 km?

Find the circumference of each circle. Use your calculator's value of . Round your answer to the nearest tenth.

9)

10)

8.3 yd

8 mi

50.3 mi

52.2 yd

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Worksheet by Kuta Software LLC

11)

12)

4.2 yd

6.2 mi

26.4 yd

39 mi

13) radius = 5.2 ft 32.7 ft

14) radius = 11.1 ft 69.7 ft

15) radius = 9.5 in 59.7 in

16) radius = 9.3 in 58.4 in

Find the radius of each circle. Use your calculator's value of . Round your answer to the nearest tenth.

17) circumference = 62.8 mi 10 mi

18) circumference = 69.1 yd 11 yd

19) circumference = 12.6 yd 2 yd

20) circumference = 25.1 ft 4 ft

Find the diameter of each circle. Use your calculator's value of . Round your answer to the nearest tenth.

21) area = 201.1 in? 16 in

22) area = 78.5 ft? 10 ft

Find the circumference of each circle.

23) area = 64 mi? 16 mi

24) area = 16 in? 8 in

Find the area of each.

25) circumference = 6 yd 9 yd?

26) circumference = 22 in 121 in?

Critical thinking question:

27) Find the radius of a circle so that its area and circumference have the same value. r = 2

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Worksheet by Kuta Software LLC

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