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Circle Terms
Finding Radius
(find the radius for all)
Finding Diameter (Find Diameter for all)
Finding Circumference(Find Circumference for all)
Finding Area
(Find area for all)
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 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 full length of a circle that 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 40.82
200

The radius of this circle is 5.

What is 78.5.

300

The perimter of a circle 

What is circumference?

300
The diameter of this circle is 27
What is 13.5
300

The circumference is 21.98 inches.

What is 7 inches. 

300

The diameter of this circle is 25. (Answer in terms of pi). 

What is 25(pi)

300

The radius of this circle is 20.

What is 1,256. 

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 18.

What is 254.34. 

500

3.14 

What is pi?

500

The circumference of the circle is 18.84 inches. 

What is 3? 

500

The diameter of this circle is 194.68

What is 62

500

The radius for this circle is 6.5 inches. 

What is 40.82 inches. 

500

The diameter of this circle is 22. 

What is 379.94.