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Circle Terms
Finding Radius
(find the radius 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 for this circle is 5

What is 31.4

100

The radius of this circle is 2

What is 12.6

200

A line that goes through the center of the circle and touches both sides of the circle.

What is the Diameter

200

The circumference is 4pi

What is 2

200

The diameter for this circle is 13

What is 40.8

200

The diameter of this circle is 6

What is 28.26

300

The perimeter of the circle

What is circumference?

300

The area of this circle is 36 pi

What is 6

300

The radius for this circle is 45

What is 282.7

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 circumference of this circle is 62.8 cm

What is 10 cm?

400

The Area of the circle is 16pi in2. (Put answer in terms of pi)

What is 8pi in

400

The circumference of this circle is 6pi ft

What is 9pi ft2

500

3.14 

What is pi?

500

The area of the circle is 158.3

What is 7.1

500

The Area for this circle is 201.1 m2

What is 50.3 m 

500

The circumference of this circle is 69.1 in

What is 380.1 in2