Quiz about Finding Diameter and Radius of a Circle

Question 1

Which expression could be used to find the approximate circumference of the quilt piece?

Accepted Answer

2(pi)8

Answer

2(pi)16

Answer

2(8)

Answer

2(4)

Question 2

Which best approximates the circumference of the outer ring of this clip?

Accepted Answer

9cm

Answer

27cm

Answer

18cm

Answer

3cm

Question 3

Which method could be used to find the radius of the circle formed by the pinwheel as it spins?

Accepted Answer

Divide 9 inches by 2

Answer

Divide 9 inches by pi

Answer

multiply 9 inches by pi

Answer

multiply 9 inches by 2

Question 4

What is the diameter?

Accepted Answer

16

Answer

8

Answer

10

Answer

4

Question 5

What is the circumference?

Accepted Answer

48

Answer

96

Answer

24

Answer

18

Question 6

What is the radius?

Accepted Answer

18

Answer

72

Answer

38

Answer

14

Question 7

What is the circumference?

Accepted Answer

36pi

Answer

36

Answer

18pi

Answer

108pi

Question 8

What is the radius?

Accepted Answer

13

Answer

28

Answer

15

Answer

26

Question 9

What is the diameter?

Accepted Answer

26

Answer

6.5

Answer

15

Answer

78

Question 10

A bicycle tire has a diameter of 27 inches. How far does the bike travel along the ground when the wheel rotates once? What is the circumference of this tire?

Accepted Answer

81

Answer

15.5

Answer

27

Answer

13

Question 11

A bicycle tire has a diameter of 27 inches. What is the radius?

Accepted Answer

13.5

Answer

27pi

Answer

81

Answer

25pi

Question 12

The radius is....

Accepted Answer

a line from the center point to the edge of the circle

Answer

a line that crosses through the center and touches each edge

Answer

the center point of a circle

Answer

an element in science

Question 13

The distance around a circle; much like the perimeter of a rectangle.

Accepted Answer

circumference

Answer

perimeter

Answer

diameter

Answer

radius

Question 14

A line that goes from one end of the circle to the other and crosses the center point.

Accepted Answer

diameter

Answer

center

Answer

dime eater

Answer

radius

Question 15

The distance around a circular track is 31.4 yards. What Is the radius of the track?

Accepted Answer

r=5

Answer

r=10

Answer

r=98.6

Question 16

If you are given the diameter, how can you calculate the radius

Accepted Answer

Divide the diameter by 2

Answer

Multiply the diameter by 2

Answer

add the diameter plus 2

Question 17

Mrs. Jonas is buying a circular mirror that has a diameter of 12 in.  What is the total distance around the mirror?

Accepted Answer

37.68 in

Answer

12 in

Answer

3.76 in

Answer

75.36 in

Question 18

Jeff is buying new tires for his bike.  If his bike tire has a radius of 8, what is the distance around the tire he is purchasing?

Accepted Answer

50.24

Answer

25.12

Finding Diameter and Radius of a Circle

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