Circle Basics C & A

Find the diameter 
C=12π

• 12
• 24
• 6
• 144

Match the following

• Formula to find the area of a circle.

• Line segment with one end point in the center of the circle and the other on the circumference.

• Diameter

• The distance around the circle.

• Circumference

• Longest chord in the circle, passing through the center.

• Radius

The distance from the center to the edge of the circle is called the __________.

• diameter

• circumference

• area

• radius

What is the radius?

• 18
• 72
• 38
• 14

What is the diameter?

• 8
• 16
• 10
• 4

The distance around the outside of a circle is called the

• Diameter
• Radius
• Circumference
• Area

Find the area of the circle below. Use 3.14 for π

• 100 cm
• 225 cm
• 9 cm
• 28.26 cm