Circle Terms
Finding Radius
Finding Diameter
Finding Circumference - Approximate
Finding Circumference - Exact
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 4pi

200
The longest chord in a circle
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 40.82
200

The radius of this circle is 3

What is 6pi

300
A line through the circle.
What is a chord?
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 42pi

400
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 52.4

What is 52.4pi

500
3.14 or 22/7
What is pi?
500
The diameter of this circle is 0.325
What is 0.1625
500
The diameter of this circle is 194.68
What is 62
500
The Diameter for this circle is 3285
What is 10314.9
500

The radius of this circle is 6955

What is 13910pi

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