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Kuta Software - Infinite Geometry Name___________________________________

Period____Date________________Circumference and Area of Circles

Find the area of each. Use your calculator's value of

ππππ. Round your answer to the nearest tenth.

1)

12 in

2)

14 km

3)

9 m

4)

11 cm

5) radius = 2.6 in 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

ππππ. Round your answer to the

nearest tenth.

9)

8 mi

10)

8.3 yd

-1-

©W B2D0G1d24 nKju8tXaY OSzo7f3ttw3a4rQe6 fL9LHCR.B G DAclqlO BriiOgHh2tRsG brZebseeErBvoeNdP.6 D IMyakdkeJ PwOibt0hY iIpnyfrilnyiGtret oGBeNo1m6eLtirryh.t Worksheet by Kuta Software LLC

11)

4.2 yd

12)

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

ππππ. 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

ππππ. Round your answer to the nearest

tenth.

21) area = 201.1 in² 22) area = 78.5 ft²

Find the circumference of each circle.

23) area = 64

π mi² 24) area = 16

π in²

Find the area of each.

25) circumference = 6

π yd 26) circumference = 22

π in

Critical thinking question:

27) Find the radius of a circle so that its area

and circumference have the same value.

-2-

©G 82A0R1z2e 2KOuTtIaI UStoSfDtYwxaDrFeo uLFLRCr.C X gAMlslS PrziTg9hptOsg RrCe5saeBr5v2evd3.P 3 bMrapdieW owmiYtyhD bIPnFf0iunQintxex WGGe3oWmVeFtvrJyH.l Worksheet by Kuta Software LLC

Kuta Software - Infinite Geometry Name___________________________________

Period____Date________________Circumference and Area of Circles

Find the area of each. Use your calculator's value of

ππππ. Round your answer to the nearest tenth.

1)

12 in

452.4 in²

2)

14 km

615.8 km²

3)

9 m

254.5 m²

4)

11 cm

380.1 cm²

5) radius = 2.6 in

21.2 in²

6) radius = 34.1 in

3653.1 in²

7) radius = 13.2 km

547.4 km²

8) radius = 29.9 km

2808.6 km²

Find the circumference of each circle. Use your calculator's value of

ππππ. Round your answer to the

nearest tenth.

9)

8 mi

50.3 mi

10)

8.3 yd

52.2 yd

-1-

©f Y2S0C162S HKkuFt6aD fSRoIfptnwtamrieJ CLKLACo.T 1 tA6lUlW crEiXgahmtjsl rr1ebsBeTrLv1eKdy.C 3 FMvacdhe3 6wDiQt4hW CIVnCfhiSn6iOtxe8 qGkeno7mWeqt5rPyo.P Worksheet by Kuta Software LLC

11)

4.2 yd

26.4 yd

12)

6.2 mi

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

ππππ. 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

ππππ. Round your answer to the nearest

tenth.

21) area = 201.1 in²

16 in

22) area = 78.5 ft²

10 ft

Find the circumference of each circle.

23) area = 64

π mi²

16

π mi

24) area = 16

π in²

8

π in

Find the area of each.

25) circumference = 6

π yd

9

π yd²

26) circumference = 22

π in

121

π in²

Critical thinking question:

27) Find the radius of a circle so that its area

and circumference have the same value.

r = 2

-2-

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