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Circle Terms
Finding Radius
(find the radius for all)
Finding Diameter (Find Diameter 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 of this circle is 5

What is 10

100

The radius for this circle is 8 miles

What is 50.3 miles

100

The radius of this circle is 2

What is 12.56

200

A line with endpoints on the circle

What is a Chord

200

The diameter is 437

What is 218.5

200
The radius of this circle is 2.5
What is 5
200

The diameter for this circle is 13

What is 40.8

200

The radius of this circle is 3

What is 28.26

300

The longest chord of a circle

What is the Diameter?

300

The diameter of this circle is 0.325

What is 0.1625

300

The radius of this circle is 38203.7

What is 76407.4

300
The diameter of this circle is 25
What is 78.5
300

The diameter of this circle is 42

What is 1385.44

400

A line intersecting the circle at exactly one point

What is the Tangent?

400

The circumference of this circle is 12.6 yd

What is 2 yd

400
The circumference of this circle is 18.84
What is 6
400

The radius for this circle is 3285

What is 20640.3

400

The radius of this circle is 52.4

What is 8626.1

500

Crosses through the circle intersecting at two points

What is a Secant?

500

The area of this circle is 452.4 in2

What is 12 in.

500

The area of this circle is 78.5 ft2

What is 10 ft.

500

The Area for this circle is 64pi

What is 16pi

500

The circumference of this circle is 22pi

What is 121pi