Circles

What is the formula for circumference of a circle given the diameter?

• C = π r
• C = 2 π r
• C = π d
• C = 2 π d

Tags

CCSS.7.G.B.4

What is the area of a circle?

• The distance around a circle.
• The space inside the circle.
• A line from side to side passing through the center.
• A line from the center to the side.

Tags

CCSS.HSG.GMD.A.1

What is circumference?

• The distance around a circle.
• The space inside the circle.
• A line from side to side passing through the center.
• A line from the center to the side.

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.GMD.A.1

A _____ is half of a circle.

• circumference
• pi
• semicircle
•  composite figure

Tags

CCSS.HSG.C.A.2

If you are given the diameter, how can you calculate the radius?

• Multiply the diameter by 2
• Divide the diameter by 2
• Add 2 to the diameter
• Subtract 2 from the diameter

Tags

CCSS.7.G.B.4

Which segment is the diameter?

• AC
• BD
• LM
• CE

Tags

CCSS.HSG.C.A.2

Which segment is a radius?

• LM
• DC
• BD
• ML

Tags

CCSS.HSG.C.A.2

If the area of circle is 100 π inches squared, find the radius of the circle.

• 10 π

• 10

• 50

• 50 π

The distance across a circle through its center is called the _____.

• diameter
• radius
• π
• center

Tags

CCSS.HSG.CO.A.1

The _____ is the distance from the center to any point on the circle.

• diameter
• radius
• π
• center

Tags

CCSS.HSG.C.A.2

CCSS.HSG.CO.A.1