Circles, Circles, Circles!

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 part in a circle. From one edge to the other through the center. 

What is the Diameter

300

The distance around the circle.

What is circumference?

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 and Diameter

100

The Diameter of this circle is 5. What is the radius?

What is 2.5

200

The Radius is 12. What is the diameter?

What is 24

300

The diameter of this circle is 27. What is the radius?

What is 13.5

400

The Radius of this circle is 37. What is the diameter?

What is 74

500

The circumference is 25.12. What is the radius?

What is 4?

Finding Area

100

The radius of this is 5

What is 78.5

200

The radius of this circle is 2.5

What is 19.625

300

The diameter of this circle is 15.7

What is 193.49

400

The diameter is 10. What is the area?

What is 78.5

500

The circumference of this circle is 194.68.

What is 3,017.54

Finding Circumference

100

The diameter for this circle is 10

What is 31.4

200

The diameter for this circle is 13

What is 40.82

300

The radius of this circle is 25

What is 157

400

The radius for this circle is 45

What is 282.6

500

The radius is 2.3

What is 14.444 or 14.44

Semi circles

100

The radius of a semicircle is 2. What is the area?

6.28

200

The radius of a semicircle is 5. What is the area

39.25

300

The diameter of a semicircle is 14. What is the area?

76.93

400

The radius of a semi circle is 4. What is the area?

25.12

500

The diameter of a semi circle is 20. What is the area?

314