Circular Parts
Circumference: The Distance Around the Round
Area: Pie are squared or Pie is squared?
Circular Writing
Finding Radius and Diameter
100
This is the distance between the center of a circle and any point on the circle. 
What is radius?
100
The circumference of a circle which has a diameter of 10 meters (rounded to the nearest 10th).
What is 31.4 meters?
100
This is the area of a circle with a radius of 10 m.
What is 314 m2?
100
A circular pool is 25 feet in diameter. This is the number of 1 foot tiles needed to go around the circumference of the pool. (Round UP to the nearest WHOLE tile).
What is 154 tiles?
100
The circumference of a circle is 18.84. What is the diameter?
6
200
The point which is equidistant (same distance) to all points on the circle.
What is the center?
200
The circumference of a circle with a radius of 10 feet.
What is 62.8 feet?
200
This is the area of a circle with a radius of 20 feet.
What is 1256 ft2?
200
A dog is tied up to a tree using a 15 foot rope. This is the area of the lawn the dog can walk on while being tied up, assume the dog can walk in a full circle around the tree.
What is 706.5 ft2?
200
The circumference of a circle is 194.68. What is the diameter?
62
300
A line which contains the center of the circle and two points on opposite sides of the circle. 
What is diameter?
300
The circumference of a circle with a radius of 25 centimeters.
What is 157 centimeters?
300
This is the area of a circle with a diameter of 10 in.
What is 78.5 in2?
300
This is the area inside of a basketball rim.
What is 1589.625 cm2?
300
The circumference is 25.12. What is the radius?
4
400
Half a circle.
What is a semi-circle?
400
This is the diameter of a circle with a circumference of 47.1 inches.
What is a diameter of 15 inches?
400
This is the radius of a circle with an area of 28.26 ft2.
What is a radius of 3 feet?
400
This is the area of a circle which has a circumference of 31.4 inches.
What is 78.5 in2?
400
The diameter of a a circle is 437. What is the radius?
218.5
500
A line which connects any two points on the circle but DOES NOT go through the center of the circle. For example: Line segment AB below.
What is a chord?
500
This is the radius of a circle with a circumference of 125.6 millimeters.
What is 20 millimeters?
500
This is the diameter of a circle with an area of 153.86 cm2?
What is a diameter of 7 cm?
500
Surprise! For 500 points, who is Mrs. Keen's favorite singer?
BRUNO MARS!
500
The radius of a circle is 15.7. What is the diameter?
31.4