Circumference, Diameter, Radius and Pi

1. 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

2. 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.

14cm in the circle represents its

• radius

• diameter

What is the length of the diameter of the circle?

• 9cm

• 6cm

• 12cm

• 6.5cm

What does "circumference" mean?

• Space a circle takes up

• Distance around a circle

• Line from one side of a circle to another

• Line from center of circle to side

What number is pi?

• 1.41

• 3.14

• 3.34

• 1.34

If you divide the circumference of a circle by its diameter, what answer will you always get?

• The radius

• The area

• Pi

• Area

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

• circumference

• area

• radius

• diameter

To go from diameter to radius, what do I need to do?

• divide by 3.14

• multiply by 3.14

• multiply by 2

• divide by 2

The black line around the circle is:

• Area

• Radius

• Diameter

• Circumference