Circles: Radius, Diameter, and Circumference

Circle Terms

100

The distance from the center of a circle to the outside, also half of the diameter

What is radius

200

The longest chord (line from edge to edge) in a circle

What is the Diameter

300

A line through the circle.

What is a chord?

400

The total amount of space inside of a circle

What is the area?

500

3.14~ or 22/7~

What is pi?

Finding Radius(find the radius for all)

100

The Diameter of this circle is 5

What is 2.5un

200

The diameter is 12

What is 6un

300

The diameter of this circle is 27

What is 13.5un

400

The diameter of this circle is 437

What is 218.5un?

500

The diameter of this circle is 0.325

What is 0.1625un?

Finding Diameter (Find Diameter for all)

100

The radius of this is 5

What is 10un

200

The radius of this circle is 2.5

What is 5un

300

The circumference of this circle is 15.7

What is 5un

400

The circumference of this circle is 18.84

What is 6un

500

The circumference of this circle is 194.68

What is 62un

Finding Circumference(Find Circumference for all)

100

The diameter for this circle is 10

What is 31.4un

200

The diameter for this circle is 13

What is 40.82un

300

The diameter of this circle is 25

What is 78.5un

400

The radius for this circle is 45

What is 282.6un

500

The Diameter for this circle is 3285

What is 10314.9un

Finding Area(Find area for all)

100

The radius of this circle is 2

What is 12.56un²

200

The radius of this circle is 3

What is 28.26un²

300

The radius of this circle is 21

What is 1384.74un²

400

The radius of this circle is 52.4

What is 8621.6864un²

500

The radius of this circle is 6955

What is 151888158.5un²