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 5. What is the radius?

What is 2.5

100

Is circumference or area proportional to diameter?

What is circumference

100

What is the equation for finding the area of a circle?

What is πd

100

What is the equation for finding the area of a circle?

What is πr²

200

The longest segment in a circle

What is the Diameter

200

The diameter of a circle is 12. What is the radius?

What is 6

200

What is the equation for finding the diameter of a circle?

What is 2r

200

The diameter for this circle is 13. What is the circumference?

What is 40.82

200

The radius of this circle is 3. What is the area?

What is 28.26

300

The distance around a circle

What is circumference?

300

The diameter of this circle is 27. What is the radius?

What is 13.5

300

The circumference of a circle is 15.7. What is the diameter?

What is 5

300

The diameter of this circle is 25. What is the circumference?

What is 78.5

300

The radius of this circle is 21. What is the area?

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 0.325. What is the radius?

What is 0.1625

400

The circumference of a circle is 18.84. What is the diameter?

What is 6

400

The radius for this circle is 45. What is the circumference?

What is 282.6

400

The radius of this circle is 52.4. What is the area?

What is 8621.6864

500
3.14 or 22/7
What is pi?
500

The circumference of a circle is 194.68. What is the radius? 

What is 31

500

The circumference of a circle is 194.68. What is the diameter?

What is 62

500

The area for this circle is 254.34 units². What is the circumference?

What is 56.52

500

The circumference for this circle is 56.52 units². What is the area?

What is 254.34 units²

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