Quiz about Circle Parts and Formulas

Question 1

The definition of radius is

Accepted Answer

distance from the center to any point on the circle

Answer

distance from one point to another point

Answer

distance around the circle

Answer

distance across the circle through the center

Question 2

The definition of diameter is

Accepted Answer

distance across the circle through the center

Answer

distance from the center of any point on the circle

Answer

distance from one point to another

Answer

distance around the circle

Question 3

The definition of circumference is

Accepted Answer

distance around the circle

Answer

distance from the center of any point on the circle

Answer

distance from one point to another

Answer

distance from the center of any point on the circle

Question 4

which segment above represents the diameter

Accepted Answer

BD

Answer

BC

Answer

AC

Answer

LM

Question 5

which segment above represents the radius

Accepted Answer

AC

Answer

AB

Answer

LM

Question 6

Find the radius of the circle

Accepted Answer

10 ft

Answer

20 ft

Answer

5.5 ft

Answer

10

Question 7

find the diameter of the circle

Accepted Answer

14 m

Answer

7 m

Answer

14

Answer

3.5 m

Question 8

find the radius of the circle

Accepted Answer

1.5 m

Answer

3 m

Answer

1.5

Answer

1.5 mm

Question 9

find the diameter of the circle

Accepted Answer

4 ft

Answer

1 ft

Answer

4 mm

Answer

2 ft

Question 10

what is the radius of the inner circle?

Accepted Answer

8 in

Answer

12 in

Answer

8 ft

Answer

4 in

Question 11

what is the diameter of the inner circle

Accepted Answer

16 in

Answer

12 in

Answer

4 in

Answer

8 ft

Question 12

The radius of the circle is 9 meters. What is the circle's circumference?

Accepted Answer

56.52 meters

Answer

9 meters

Answer

28.26 meters

Answer

18 meters

Question 13

What is the circumference of a circle with a radius of 54 m?

Accepted Answer

339.12 m

Answer

169.56 m

Answer

84.78 m

Question 14

What is the circumference of this circle?  Round to the nearest tenth.

Accepted Answer

37.7 cm

Answer

3.14 cm

Answer

24 cm

Answer

68.4 cm

Question 15

If the diameter of a circle is 10 mm, the circumference is approximately ___

Accepted Answer

31.4 mm

Answer

314 mm

Answer

3.14 mm

Answer

20 mm

Question 16

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's approximate circumference?

Accepted Answer

18.84 m

Answer

3 m

Answer

9.42 m

Answer

12 m

Question 17

Find the area of the circle

Accepted Answer

153.86

Answer

43.96

Answer

87.82

Answer

307.72

Question 18

Find the area of the circle

Accepted Answer

254.34

Answer

56.52

Answer

1017.36

Answer

113.04

Question 19

find the area of the circle below.

Accepted Answer

28.26 cm

Answer

100 cm

Answer

225 cm

Answer

9 cm

Question 20

Choose the answer which best describes how these formulas are related to each other.

Accepted Answer

They both solve for circumference. In the first formula it uses diameter, in the second formula it uses two times the radius, which is the same thing as diameter.

Answer

They both solve for circumference, in the first uses diameter and the second uses pi.

Answer

They both solve for area. In the first formula it uses diameter, in the second formula it uses two times the radius, which is the same thing as diameter.

Answer

They both use circumference to solve for pi. One uses radius, the other uses diameter.

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