3.07 Describing Circles

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

• Radius

• Diameter

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

• Radius

• Diameter

The radius of a circle is ​ (a)   the diameter.

• half
• twice
• triple

The diameter is ​ (a)   so the radius of the circle is ​ (b)  

• 8 inches
• 4 inches
• 16 inches
• 2 inches

What is the radius measurement? ​ (a)  

• 6 cm
• 12 cm 
• 24 cm

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

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. 

What is the diameter?

• 8
• 16
• 10
• 4

What is the perimeter of this rectangle?

• 60 cm

• 34 cm

• 60 cm

The distance around an object is called the 

• area
• perimeter