Finding Radius or Diameter when Given Circumference

1.Is the red line a radius or diameter of the circle?

2.Is the red line a radius or diameter of the circle?

3.Find the diameter of a circle with a circumference of 25.12 inches.

4.Find the radius of a circle with a circumference of 423.9 inches.

5.Find the radius of a circle with a circumference of 59.66 feet.

6.Find the diameter of a circle with a circumference of 40.82 inches.

7.The circumference is 62.8 inches. What is the radius?

8.Jayne has a very large circular lollipop that has a circumference of 25.12 inches. What would the diameter of Jayne’s lollipop be? Use π = 3.14.

9.The circumference of a circle is 30π. What is the radius?

10.The circumference of a circle is 12π. What is the diameter?