Understanding radius, Diameter, and Pi

Is this radius or diameter?

• Radius

• Diameter

Is this Radius or Diameter?

• Radius

• Diameter

Is this Radius or Diameter?

• Radius

• Diameter

What is the diameter?

• 5 in
• 10 in
• 3.14 in
• 15.84 in

What is the circle's radius?

• 3 m

• 6 m

• 12 m

What is the circle's diameter?

• 3 m

• 6 m

• 12 m

What is the radius of a circle when the diameter is 70 m?

• 38 m

• 35 m

• 90 m

• 140 m

What is the diameter?

• 8 cm

• 16 cm

• 10 cm

• 4 cm

a straight line from the center of a circle to the circumference

• Diameter

• Circumference

• Radius

• Area

What is radius?

• a straight line going from the center point of a circle to the outer edge

• Diameter is a straight line going from the outer edge of a circle to the other outer edge

• the line that goes complete around the outside of a circle

• radius is the area inside a circle