Circle Terms
Radius
Diameter
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 5in. What is the radius?

What is 2.5in. 

100

The radius of this is 5ft. What is the diameter?

What is 10ft. 

100

The diameter for this circle is 10un. What is the circumference?

What is 31.4un. 

100

The radius of this circle is 2un. What is the area?

What is 12.56un2

200

The line that goes through the center point and connects from one side to the other. 

What is the Diameter

200

The diameter is 30.186cm. What is the radius?

What is 15.93cm. 

200

The radius of this circle is 3.75un. What is the diameter? 

What is 7.5un. 

200

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

What is 40.82un. 

200

The radius of this circle is 3un. What is the area? Round to the tenths place value. 

What is 28.3un2

300

The distance around the circle.

What is a circumference?

300

The diameter of this circle is 129.265cm. What is the radius? Round to the thousandths place. 

What is 64.633cm. 

300

The circumference of this circle is 15.7un. What is the diameter? 

What is 5un. 

300

The diameter of this circle is 25.75. What is the circumference?

What is 80.855un

300

The diameter of this circle is 21un. What is the area?

What is 346.185un2.

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

The circumference of this circle is 153.86in. What is the radius?

What is 24.5in.

400

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

What is 6

400

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

What is 282.6un.

400

The diameter of this circle is 97un. What is the area and round to the nearest hundredth place.  

What is 7,386.07un2

500
3.14 or 22/7
What is pi?
500

The circumference of this circle is 467.075cm. What is the radius?

What is 74.375cm.

500

The circumference of this circle is 194.68un. What is the diameter? 

What is 62un. 

500

The radius for this circle is 8.179un. What is the circumference? Round to the nearest Hundredth place. 

What is 51.36un.

500

The circumference of this circle is 785. What is the area?

What is 49,062.5un2