Area Radius Diameter Circumference

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 38 mm

• 119.32 mm

Brian made a tasty burger. The diameter of the
burger was 5 cm. What is the radius of the circle?

• 15.7 cm

• 10 cm

• 2.5 cm

• 31.4 cm

A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?
use C=2πr

• c = 15π

• C = 2π15

• c = 15 ÷ π

• c = 15 π

The radius is....

• a line that crosses through the center and touches each edge 

• the center point of a circle 

• a line from the center point to the edge of the circle

• an element in science

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

What is the diameter of a circle?

• the distance around a circle

• the area of a circle

• halfway through a circle

• a line through the center of a circle

The radius of a circle is _______ the diameter.

• 
  half

• 
  triple

• twice

• double

If the radius of a circle is 12.5 meters, the diameter is ____.

• 
  6.25 meters

• 25 meters

• 125 meters

• 50 meters

What is the student measuring?

• the diameter of the frisbee

• the radius of the frisbee

• the area of the frisbee

• the circumference of the frisbee

The distance from any point on the outside of a circle to the center of the circle is called what?

• Diameter

• Circumference

• Area

• Radius