Ch .9 Test Review: Geometry (free 100)

The distance across a circle through its center is called the _____.

• diameter
• radius
• π
• center

The _____ is the distance from the center to any point on the circle.

• diameter
• radius
• π
• center

A _____ is half of a circle.

• circumference
• pi
• semicircle
•  composite figure

If you are given the diameter, how can you calculate the radius?

• Multiply the diameter by 2
• Divide the diameter by 2
• Add 2 to the diameter
• Subtract 2 from the diameter

Which segment is the diameter?

• AC
• BD
• LM
• CE

Which segment is a radius?

• LM
• DC
• BD
• ML

What is the formula for circumference? (Select all that apply)

• C = π r

• C = 2 π r

• C = π d

• C = 2 π d

What is the circumference?

• 48
• 96
• 24
• 18

A minute hand (radius) of a clock is 13.8 meters long. What is the circumference of the clock?

• 86.70 meters
• 76.66 meters
• 66.66 meters
• 96.66 meters

What is the circumference of a 12 inch (diameter) pizza?

• 37.68 inches
• 36.68 inches
• 35.68 inches
• 34.68 inches