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

If the circumference of a circle is 22 π ft, what is the radius?

• 22 ft
• 11ft
• π ft
• no ft

Tags

CCSS.7.G.B.4

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

• diameter
• radius
• π
• center

Tags

CCSS.HSG.CO.A.1

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 , find the radius of the circle.

• 10 π
• 10
• 50
• 50 π

Tags

CCSS.7.G.B.4

The distance all the way across the circle is called the...

• radius
• diameter
• circumference
• area

The perimeter of a circle is usually called the...

• radius
• diameter
• circumference
• area

Tags

CCSS.HSG.GMD.A.1

What is the diameter?

• 8
• 16
• 10
• 4

Tags

CCSS.7.G.B.4

What is the radius?

• 18
• 72
• 38
• 14

Tags

CCSS.7.G.B.4