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Circle Terms
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 10.

What is 5?

100

The radius of this is 15.

What is 30?

100

The radius for this circle is 10.

What is 20(pi)?

100

The radius of this circle is 2.

What is 4(pi)?

200
The longest chord in a circle
What is the Diameter
200

The circumference of this circle is 24(pi).

What is 12?

200

The circumference of this circle is 24(pi).

What is 24?

200

The diameter for this circle is 15.

What is 15(pi)?

200

The diameter of this circle is 6.

What is 9(pi)?

300

The distance around the circle.

What is circumference?

300

The circumference of this circle is 56(pi).

What is 28?

300

The circumference of this circle is 15(pi).

What is 15?

300

The diameter of the Earth is 7,917.5 mi. 

What is 24873.6 mi?

300

A the radius of a button is 10 cm.

What is 100(pi)?

400
The total amount of space inside of a circle
What is the area?
400

The area of this circle is 64(pi).

What is 8?

400

The area of this circle is 81(pi).

What is 18?

400

From the center of a bicycle wheel to the tire is 26 cm.

What is 52(pi)?

400

A 10 inch pizza.

What is 25(pi)?

500

3.14 or 22/7

What is pi?

500

The area of this circle is 36(pi)

What is 12?

500

The area of this circle is 100(pi).

What is 20?

500

The area of this circle is 25(pi).

What is 10(pi)?

500

The circumference of the circle is 16(pi).

What is 64(pi)?