Radius, Diameter, Circumference of a Circle

The radius of a circle is

• The measurement from the center of a circle to an edge of the circle.
• The measurement around the circle
• The measurement from and edge of the circle to another edge through the center
• A line perpendicular to the diameter of the circle

Tags

CCSS.4.G.A.1

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. 

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2

What is the diameter?

• 8
• 16
• 10
• 4

Tags

CCSS.7.G.B.4

What is the radius?

• 18
• 72
• 38
• 14

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

• Radius
• Diameter

Tags

CCSS.7.G.B.4

What does "circumference" mean?

• Space a circle takes up
• Distance around a circle
• Line from one side of a circle to another
• Line from center of circle to side

Tags

CCSS.HSG.GMD.A.1

Of these values, which is the best approximation for pi?

• 1.41

• 2.00

• 3.14

• 5.14

Tags

CCSS.5.NBT.A.3

CCSS.5.NBT.A.4

CCSS.5.NBT.B.7

What two formulas can you use to find the circumference?

• C = π·d

• C = π·r²

• C = 2·π·r

• C = d²

Tags

CCSS.7.G.B.4

what is the circumference of this circle ?

• 3.14 cm 
• 37.68 cm
• 24 cm
• 68.4 cm

Tags

CCSS.7.G.B.4

What is the circumference of the circle?

• 21.98 yd

• 10.99 yd

• 43.96 yd

• 87.92 yd

Tags

CCSS.7.G.B.4