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Circle Terms
Finding Radius and Diameter
Finding Area
Finding Circumference
Sir. Conference
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 78.5

100
The diameter for this circle is 10
What is 31.4
100

Write each ratio as a fraction in simplest form. 

                         78:780

1:10

200

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

What is the Diameter

200

The Radius is 12

What is 24

200

The radius of this circle is 2.5

What is 19.625

200
The diameter for this circle is 13
What is 40.82
200

The ratio of wins lo losses for a team with 60 wins and 90 losses.

2:3

300

The distance around the circle.

What is circumference?

300
The diameter of this circle is 27
What is 13.5
300

The diameter of this circle is 15.7

What is 193.49

300

The radius of this circle is 25

What is 157

300

The ratio of girls to boys in a 7th grade class with 300 girls and 250 boys. (Simplest Form)

6/5

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

The Radius of this circle is 37

What is 74

400

The circumference of this circle is 18.84

What is 28.26

400

The radius for this circle is 45

What is 282.6

400

The ratio of red to blue for a purple paint made by mixing 24 oz of red with 28 oz of blue. (Simplest Form)

6/7

500
3.14 or 22/7
What is pi?
500

The circumference is 25.12.

What is 4?

500

The circumference of this circle is 194.68.

What is 3,017.54

500

The area is 452.16

What is 75.36

500

The ratio of blue to red for a purple paint made by mixing 24 oz of red with 28 oz of blue. (Simplify)

7/6