Circles - Area, Circumference, Radius and Diameter

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

• Diameter
• Radius

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

• Diameter
• Radius

What is the symbol for pi?

• #

• π

• &

• %

Tags

CCSS.HSG.GMD.A.1

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

What is diameter?

• The space inside a circle

• a straight line passing from side to side through a circle

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.HSG.C.A.2

What is area?

• How big the circle is

• The area around a circle

• The inside of a circle

Determine the radius of the penny

• 59.66 mm
• 9.5 mm
• 38 mm
• 119.32 mm

Tags

CCSS.7.G.B.4

What is the diameter?

• 5 in
• 10 in
• 3.14 in
• 15.84 in

Tags

CCSS.7.G.B.4

Which TWO formulas could you use for circumference?

• π x d

• π x r²

• 2 π r

• 3.14

Tags

CCSS.7.G.B.4