Circumference and Area of a Circle

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

Tags

CCSS.7.G.B.4

What is the symbol for pi?

• #

• π

• &

• %

Tags

CCSS.HSG.GMD.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.HSG.C.A.2

Which TWO formulas could you use for circumference?

• π x d

• π x r²

• 2 π r

• 3.14

What is the area of a circle?

• halfway through a circle

• a line through the center of a circle

• the amount of space inside of the circle

• the distance around a circle

Tags

CCSS.HSG.GMD.A.1

What number does π represent?

• 4.13

• 3.41

• pie

• 3.14

Tags

CCSS.HSG.GMD.A.1

What does A represent in the formula:

A = π·r²

• Area

• Radius

• Pi

• Diameter

Tags

CCSS.7.G.B.4

What does r represent in the formula:

A = π·r²

• circumference

• radius

• diameter

• squared

Tags

CCSS.7.G.B.4

In the formula A=πr² the r² mean...

• just one radius

• radius x radius (r x r)

• radius plus radius (r + r)

• nothing it's just there for show.

What is the equivalent of 4²?

• 4 x 2

• 2 x 2

• 4 x 4

• 4 + 4