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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 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 distance from edge to edge of a circle (hint: it goes through the centre of the 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 28.26
300
The perimeter of a 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 1384.74
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 104.8

What is 8621.6864?

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 radius for this circle is 1642.5

What is 10314.9

500

The diameter of this circle is 13910

What is 151888158.5