Finding Radius or Diameter when Given Circumference

Finding Radius or Diameter when Given Circumference

Multiple Choice

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

• Radius

• Diameter

Multiple Choice

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

• Radius

• Diameter

Multiple Choice

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

• 8 inches

• 11 inches

• 4 inches

• 13 inches

Multiple Choice

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

• 67.5 inches

• 62.5 inches

• 167.5 inches

• 135 inches

Multiple Choice

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

• 19 feet

• 25.5 feet

• 13.5 feet

• 9.5 feet

Multiple Choice

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

• 12 inches

• 13 inches

• 20.41 inches

• 22 inches

Multiple Choice

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

• 20 inches

• 10 inches

• 6.28 inches

• 31.4 inches

Multiple Choice

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.

• 4 in.

• 8 in.

• 12 in.

• 16 in.

Multiple Choice

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

• 30

• 60

• 15

• 45

Multiple Choice

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

• 12

• 6

• 24

• 18