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Circle Terms
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
What is 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 10
What is 31.4
100
The radius of this circle is 2
What is 12.56
200

The longest chord in a circle and goes through the center

What is the 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 40.8

200

The radius of this circle is 3

What is 28.3

300

Distance around the circle or the perimeter of the circle

What is 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 21

What is 1384.7

400

A measure of the total amount of space inside of a circle

What is the 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 45
What is 282.6
400

The diameter of this circle is 10

What is 78.5?

500
3.14 or 22/7
What is pi?
500

The diameter of this circle is 3/4

What is 3/8

500
The diameter of this circle is 194.68
What is 62
500

The radius for this circle is 45.3

What is 284.5?

500

The diameter of this circle is 28.6

What is 642.1?