Find Diameter and Radius from Circumference

What is the diameter?

• 8

• 16

• 10

• 4

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 38 mm

• 119.32 mm

• center
• diameter
• radius

The radius of a circle is

• The measurement from the center of a circle to an edge of the circle.

• The measurement around the circle

• The measurement from and edge of the circle to another edge through the center

• A line perpendicular to the diameter of the circle

What is the radius of this circle?

• 18

• 36

• 9

• 8

What is the radius?

• 18

• 72

• 38

• 14

To find the circumference of a circle, you must multiply the ________________ by 3.14.

• circumference

• area

• radius

• diameter

• center
• diameter
• radius

A circular swimming pool is has a circumference of 65.94 ft. What is the diameter of the pool?

• 207.05 ft

• 42 ft

• 21 ft

• 10.5 ft

What is the radius?

• 18

• 72

• 38

• 14