Circle Terms
Find the Radius
Find the Diameter
Find the Circumference
(using pi=3.14)
C = pi x d
Find the Area
(using pi=3.14)
A = pi x r²
100

A line that goes from the edge of a circle to its center.

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 diameter for this circle is 10.

What is 31.4?

100

The radius of this circle is 2.

What is 12.56?

200

A line that goes from one edge of a circle to another edge and passes through the center.

What is the Diameter?

200

The diameter of this circle is 27.

What is 13.5?

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 radius of this circle is 3.

What is 28.26?

300

The distance around the outside of the circle.

What is circumference?

300

The diameter of this circle is 15.5.

What is 7.75?

300

The radius of this circle is 15.5.

What is 31?

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 area?

400

The diameter of this circle is 0.325.

What is 0.1625?

400

The radius of this circle is 0.025.

What is 0.05?

400

The radius for this circle is 45.

What is 282.6?

400

The diameter of this circle is 52.

What is 2122.64?

500

The ratio of a circle's circumference to its diameter, usually approximated as 3.14.

What is pi?

500

The circumference of this circle is 50.24.

What is 8?

500

The circumference of this circle is 15.7.

What is 5?

500

The radius for this circle is 7.5.

What is 47.1?

500

The diameter of this circle is 11.

What is 94.985?

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