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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
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 line inside of 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 28.26
300

______ = 2πr

What is a 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 radius of this circle is 25 m

What is 157 m

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 diameter for this circle is 45

What is 282.6

400

The radius of this circle is 15 in. what is the area in terms of π. 

What is 225π in2

500
3.14
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 25 ft

What is 78.8 ft

500

The diameter of this circle is 40 cm 

What is 1256 cm2