Circle Vocab
Finding Radius
Finding Diameter
Finding Circumference
Finding Area
100

The distance from the center of a circle to the outside, also half of the diameter

radius

100
The Diameter of this circle is 5
What is 2.5
100
The radius of this is 5
What is 10
100

The diameter for this circle is 6

18.84 

(#1 on study guide)

100

The radius of this circle is 2.5

19.625

round to the hundredth- 19.63

(#2 study guide)

200

The line segment that passes through the center point

Diameter

200
The diameter is 12
What is 6
200
The radius of this circle is 2.5
What is 5
200
The diameter for this circle is 13
What is 40.82
200

The radius of this circle is 3

What is 28.26

300

The distance around the circle

circumference

300
The diameter of this circle is 27
What is 13.5
300
The circumference of this circle is 15.7
What is 5
300
The diameter of this circle is 25
What is 78.5
300

The radius of this circle is 6

113.04

(#3 study guide)

400

The total amount of space inside of a circle

area

400

The diameter of this circle is 437

What is 218.5?

400
The circumference of this circle is 18.84
What is 6
400

The radius for this circle is 8.2

51.496

Rounding to hundredth- 51.50

(#2 on study guide)

400

The diameter of this circle is 3

7.065

Round to the hundredth- 7.07

(#1 study guide)

500
3.14
What is pi?
500

The circumference of a circle is 25.12

What is 4

(#4 study guide)

500

The circumference of this circle is 194.68

What is 62

500
The radius for this circle is 25
What is 157
500

The diameter of this circle is 10

78.5 

(#4 study guide)

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