Question 1

What does the circumference of a circle measure?

Accepted Answer

The distance around the circle.

Answer

The space inside of the circle.

Question 2

What is the radius of a circle?

Accepted Answer

A segment from the center of the circle to a point on the circle.

Answer

A segment from one point on the circle to another point on the circle.

Answer

A segment that goes through the center of the circle from one point on the circle to anther point on the circle.

Answer

A segment that intersects a circle in only one point.

Question 3

What is the diameter of a circle?

Accepted Answer

A segment that goes through the center of the circle from one point on the circle to anther point on the circle.

Answer

A segment that goes from the center of a circle to anther point on the circle.

Answer

A segment that intersects a circle at only one point.

Answer

A segment that goes from one point on the circle to anther point on the circle.

Question 4

If the radius of a circle is 6in, what is the diameter?

Accepted Answer

12in

Answer

6in

Answer

18in

Answer

3in

Question 5

The diameter of a circle is 17 units. What is the radius?

Accepted Answer

8.5units

Answer

22units

Answer

34units

Answer

17units

Question 6

AB is a radius of circle A. If AB = 8in, what is the measure of radius AC?

Accepted Answer

8in

Answer

2in

Answer

4in

Answer

16in

Question 7

A circle has a radius of 5. What is its area?

Accepted Answer

25$\pi$

Answer

10$\pi$

Answer

5$\pi$

Answer

50$\pi$

Question 8

The diameter of a circle is 14. What is the area of the circle?

Accepted Answer

49$\pi$

Answer

7$\pi$

Answer

196$\pi$

Answer

14$\pi$

Question 9

The radius of a circle is 9in. What is the circumference?

Accepted Answer

18$\pi$

Answer

81$\pi$

Answer

4.5$\pi$

Answer

9$\pi$

Question 10

The diameter of a circle is 3cm. What is the circumference?

Accepted Answer

3$\pi$

Answer

9$\pi$

Answer

6$\pi$

Answer

12$\pi$

Question 11

A circle has a radius of 12. If a sector is created with a central angle of 45$^{\circ}$, what is the area of the sector?

Accepted Answer

18$\pi$

Answer

12$\pi$

Answer

36$\pi$

Answer

144$\pi$

Question 12

A circle has a radius of 9. If a sector is created with a central angle of 60$^{\circ}$, what is the length of the arc of the sector?

Accepted Answer

3$\pi$

Answer

81$\pi$

Answer

9$\pi$

Answer

18$\pi$

Question 13

The circumference of a circle is 32$\pi$. What is the radius?

Accepted Answer

r = 16

Answer

r = 32

Answer

r = 8

Answer

r = 4

Question 14

The area of a circle is 64$\pi$.  What is the diameter?

Accepted Answer

d = 16

Answer

d = 6

Answer

d = 2

Answer

d = 8

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