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Vocabulary
Formulas
Circumference
Area
Semicircle
100
The distance around a circle (outside) 
Perimeter 
100
Circumference of a Circle
C = πd 
100
Circumference of a circle with a diameter of 4
C = 12.56
100
Area of a circle with a radius of 3
A = 28.26
100
Area of a semicircle with a radius of 2
A = 6.28
200
The total amount of space inside the circle (inside)
Area 
200
Area of a Circle

A = πr2

200
Circumference of a circle with the diameter of 12
C = 37.68
200
Area of a circle with a radius of 4
A = 50.24
200
Area of a circle with an radius of 9
A = 127.17
300
pi
3.14
300
Area of a Half Circle

A = πr2/2

300
Circumference of a circle with a radius of 3
C = 18.84
300
Area of a circle with a diameter of 10
A = 78.5
300
Perimeter of a circle with a diameter of 7 
P = 17.99 or 18 
400
A straight line that goes through the middle of the circle and touching 2 points of the circle (full) 
Diameter 
400
Perimeter of a Half Circle
P = πd/2+d
400
Circumference of a circle with a radius of 7
C = 43.96 
400
Area of a circle with a diameter of 20
A = 314 
400
Perimeter of a circle with a diameter of 12
P = 30.84 
500
A line that goes from the center of the circle to 1 point of the circle (half) 
radius 
500
Where does Ms. Shank go to college?
Asbury 
500
Circumference of a circle with an area of 78.5 
C = 31.4
500
Area of a circle with circumference of 43.96
A = 153.86 
500
What does Ms. Shank like to do for fun? 
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