Radius and Diameter Review Vocabulary

What is the radius?

• 11 in

• 22 in

• 44 in

What is the diameter?

• 5 mm

• 10 mm

• 2.5 mm

What is the radius of a circle when the diameter is 70 m?

• 38

• 35

• 90

• 140

What is the diameter of a circle when the measure of its radii is 24 m?

• 12

• 32

• 25

• 48

What is the diameter?

• 8

• 16

• 10

• 4

The diameter of a circle is:

• The measurement around the circle.

• The distance from an edge of a circle to another edge.

• The distance from the center of the circle to an edge of a circle

• The distance from an edge of a circle to another edge through the center. 

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?

• 18

• 72

• 38

• 14

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

• Radius

• Diameter

Is this radius or diameter?

• Radius

• Diameter