Circumference and Area of a Circle

Question 1

A circle has area 400π m². What is its diameter?

Accepted Answer

40 m

Answer

20 m

Answer

400 m

Answer

80 m

Question 2

A circle has circumference 50π m. What is its radius?

Accepted Answer

25 m

Answer

50 m

Answer

100 m

Answer

625 m

Question 3

A circle has circumference 6π ft. What is its diameter?

Accepted Answer

6 ft

Answer

3 ft

Answer

12 ft

Answer

9 ft

Question 4

A circle has area 121π m². What is its diameter?

Accepted Answer

22 m

Answer

11 m

Answer

121 m

Answer

44 m

Question 5

A circle has diameter 18 ft. What is its circumference?

Accepted Answer

18\,ft

Answer

9\,ft

Answer

36\,ft

Answer

81\,ft

Question 6

A circle has radius 12 ft. What is its area?

Accepted Answer

144\,ft^2

Answer

24\,ft^2

Answer

576\,ft^2

Answer

12\,ft^2

Question 7

A circle has radius 8 ft. What is its area?

Accepted Answer

64\,ft^2

Answer

16\,ft^2

Answer

256\,ft^2

Answer

8\,ft^2

Question 8

A circle has area 25π in². What is its radius?

Accepted Answer

5 in

Answer

10 in

Answer

25 in

Answer

3 in

Question 9

A circle has diameter 12 m. What is its circumference?

Accepted Answer

12\,m

Answer

6\,m

Answer

24\,m

Answer

36\,m

Question 10

A circle has diameter 20 m. What is its circumference?

Accepted Answer

20\,m

Answer

10\,m

Answer

40\,m

Answer

100\,m

Question 11

A circle has radius 14 ft. What is its circumference?

Accepted Answer

28\,ft

Answer

14\,ft

Answer

56\,ft

Answer

196\,ft

Question 12

A circle has diameter 10 m. What is its area?

Accepted Answer

25\,m^2

Answer

100\,m^2

Answer

10\,m^2

Answer

5\,m^2

Question 13

A circle has area 100π ft². What is its radius?

Accepted Answer

10 ft

Answer

20 ft

Answer

100 ft

Answer

5 ft

Question 14

A circle has circumference 40π ft. What is its radius?

Accepted Answer

20 ft

Answer

40 ft

Answer

80 ft

Answer

400 ft

Question 15

A circle has area 225π ft². What is its radius?

Accepted Answer

15 ft

Answer

30 ft

Answer

225 ft

Answer

8 ft

Question 16

A circle has circumference 12π in. What is its diameter?

Accepted Answer

12 in

Answer

6 in

Answer

24 in

Answer

36 in

Question 17

A circle has circumference 30π in. What is its radius?

Accepted Answer

15 in

Answer

30 in

Answer

60 in

Answer

225 in

Question 18

A circle has area 49π m². What is its radius?

Accepted Answer

7 m

Answer

14 m

Answer

49 m

Answer

4 m

Question 19

A circle has radius 11 cm. What is its circumference?

Accepted Answer

22\,cm

Answer

11\,cm

Answer

44\,cm

Answer

121\,cm

Question 20

A circle has diameter 6 cm. What is its circumference?

Accepted Answer

6\,cm

Answer

3\,cm

Answer

12\,cm

Answer

9\,cm

Question 21

A circle has radius 15 m. What is its circumference?

Accepted Answer

30\,m

Answer

15\,m

Answer

60\,m

Answer

225\,m

Question 22

A circle has circumference 40π ft. What is its diameter?

Accepted Answer

40 ft

Answer

20 ft

Answer

80 ft

Answer

400 ft

Question 23

A circle has diameter 6 in. What is its area?

Accepted Answer

9\,in^2

Answer

36\,in^2

Answer

6\,in^2

Answer

3\,in^2

Question 24

A circle has diameter 50 ft. What is its area?

Accepted Answer

625\,ft^2

Answer

2500\,ft^2

Answer

50\,ft^2

Answer

25\,ft^2

Question 25

A circle has radius 4 ft. What is its area?

Accepted Answer

16\,ft^2

Answer

8\,ft^2

Answer

64\,ft^2

Answer

4\,ft^2

Question 26

A circle has area 121π m². What is its radius?

Accepted Answer

11 m

Answer

22 m

Answer

121 m

Answer

6 m

Question 27

A circle has radius 5 m. What is its area?

Accepted Answer

25\,m^2

Answer

10\,m^2

Answer

100\,m^2

Answer

5\,m^2

Question 28

A circle has circumference 14π ft. What is its radius?

Accepted Answer

7 ft

Answer

14 ft

Answer

28 ft

Answer

49 ft

Question 29

A circle has area 81π in². What is its diameter?

Accepted Answer

18 in

Answer

9 in

Answer

81 in

Answer

36 in

Question 30

A circle has circumference 8π m. What is its diameter?

Accepted Answer

8 m

Answer

4 m

Answer

16 m

Answer

11 m

Question 31

A circle has radius 10 cm. What is its area?

Accepted Answer

100\,cm^2

Answer

20\,cm^2

Answer

400\,cm^2

Answer

10\,cm^2

Question 32

A circle has diameter 28 ft. What is its circumference?

Accepted Answer

28\,ft

Answer

14\,ft

Answer

56\,ft

Answer

196\,ft

Question 33

A circle has radius 15 cm. What is its area?

Accepted Answer

225\,cm^2

Answer

30\,cm^2

Answer

900\,cm^2

Answer

15\,cm^2

Question 34

A circle has radius 4 in. What is its circumference?

Accepted Answer

8\,in

Answer

4\,in

Answer

16\,in

Answer

10\,in

Question 35

A circle has diameter 8 in. What is its circumference?

Accepted Answer

8\,in

Answer

4\,in

Answer

16\,in

Answer

12\,in

Question 36

A circle has diameter 18 m. What is its area?

Accepted Answer

81\,m^2

Answer

324\,m^2

Answer

18\,m^2

Answer

9\,m^2

Question 37

A circle has radius 14 m. What is its area?

Accepted Answer

196\,m^2

Answer

28\,m^2

Answer

784\,m^2

Answer

14\,m^2

Question 38

A circle has diameter 14 in. What is its area?

Accepted Answer

49\,in^2

Answer

196\,in^2

Answer

14\,in^2

Answer

7\,in^2

Question 39

A circle has radius 12 in. What is its circumference?

Accepted Answer

24\,in

Answer

12\,in

Answer

48\,in

Answer

144\,in

Question 40

A circle has radius 5 ft. What is its circumference?

Accepted Answer

10\,ft

Answer

5\,ft

Answer

20\,ft

Answer

25\,ft

BLASTROOM

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BLASTROOM

Circumference and Area of a Circle

Ways to Play

Device Games: Students play on their phones

Blast Go

Zombie Escape

Avalanche

Maze Blast

Cave Climb

Blast Out

Mystery Auction

Tour Guide

Food Truck Rush

Tug of War

Alien Blast

Glacier Rush

Board Games: Teacher-led, projected to the class

Like what you see?

Bug Blast

BlastRace

BlastQuiz

BlastBoard

Seek & Destroy

Mystery Blast

Checkers

Texas Hold 'Em

Da Bomb

Castle Siege

Hot Potato

Market Mayhem

King of the Hill

Bank Heist

Top Corner

Circumference and Area of a Circle

Ways to Play

Device Games: Students play on their phones

Blast Go

Zombie Escape

Avalanche

Maze Blast

Cave Climb

Blast Out

Mystery Auction

Tour Guide

Food Truck Rush

Tug of War

Alien Blast

Glacier Rush

Board Games: Teacher-led, projected to the class

Like what you see?

More like this

Bug Blast

BlastRace

BlastQuiz

BlastBoard

Seek & Destroy

Mystery Blast

Checkers

Texas Hold 'Em

Da Bomb

Castle Siege

Hot Potato

Market Mayhem

King of the Hill

Bank Heist

Top Corner