Circle Terms
Radius & Diameter
Circumference Problems
Area Problems
Odds & Ends
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. How long is the radius?
What is 2.5?
100
Find the circumference of a circle with a diameter of 7.
What is 21.98?
100
Find the area of a circle with a radius of 5. (round to the nearest tenth)
What is 78.5?
100
Name three common items that are circles.
Answers will vary, but could include buttons, lids, coins, and many other things!
200
The distance across a circle through its center.
What is the diameter?
200
The diameter is 12. How long is the radius of this circle?
What is 6?
200
Find the circumference of the circle shown below:
What is 25.12?
200
Find the area of the circle shown below, rounded to the nearest tenth:
What is 28.3?
200
Which of these coins has the largest diameter: nickel or dime?
Nickel
300
The distance around a circle.
What is the circumference?
300
The radius of this circle is 13.5. How long is the diameter?
What is 27?
300
Find the circumference of a circle with a radius of 5.
What is 31.4?
300
Find the area of a circle with a diameter of 25.
What is 490.6?
300
The circular fountain in front of the courthouse has a radius of 9.4 feet. What is the circumference of the fountain? Round to the nearest tenth.
What is 59 feet?
400
The total amount of space inside of a circle
What is the area?
400
The radius of this circle is 123. How long is the diameter?
What is 246?
400
Find the circumference of the circle shown below:
What is 18.84?
400
Find the area of the circle shown below, rounded to the nearest tenth:
What is 50.2?
400
The circumference of a circle is 47.1, what is the area of this circle?
What is 176.6?
500
3.14 or 22/7
What is pi?
500
The diameter of this circle is represented by x. How would you represent the radius?
What is x/2?
500
If the circumference of a circle is 75.36, what is the diameter?
What is 24?
500
If the area of a circle is 530.66, what is the radius?
What is 13?
500
The area of a circle is 615.44, what is the circumference of this circle?
What is 87.92?