Circle Terms
Finding Radius
(find the radius for all)
Finding Diameter (Find Diameter for all)
Circumference
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 2.5
100
The radius of this is 5
What is 10
100

The radius for this circle is 5

What is 31.4

100
The radius of this circle is 2
What is 12.56
200

The length of the circle

What is the Diameter

200
The diameter is 12
What is 6
200
The radius of this circle is 2.5
What is 5
200
The diameter for this circle is 13
What is 40.82
200

The diameter of this circle is 6

What is 28.26

300

A perimeter of the circle.

What is the circumference?

300
The diameter of this circle is 27
What is 13.5
300
The circumference of this circle is 15.7
What is 5
300
The diameter of this circle is 25
What is 78.5
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 diameter of this circle is 437
What is 218.5?
400
The circumference of this circle is 18.84
What is 6
400

A circular fountain covers 615.44 m². The city wants to put lights around the edge.
How many meters of lights are needed?

What is C = 87.92 m

400

A circular stage has a circumference of 94.2 feet. What is the area of the stage?

What is A = 706.5 in sq
500

3.14 or 22/7

What is pi?

500


A circular garden has an area of 452.16 ft². What is the Radius

What is r = 12 ft

500

The area of a circle is 153.86 in². Find the diameter.

What is d = 14 in

500

A circular garden has an area of 452.16 ft². How many feet of fencing are needed to go around the garden?

75.36 in = C

500

The diameter of a circle of 36 in. What is the area?

What is 1017.36 in sq

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