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

Which segment is the diameter?

• AC
• BD
• LM
• CE

Which segment is a radius?

• LM
• DC
• BD
• ML

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

what is the radius of the inner circle?

• 12 in

• 8 in

• 8 ft

• 4 in

Tags

CCSS.7.G.B.4

A line segment on the interior of a circle with endpoints on the circle

• Radius
• Diameter
• Secant
• Chord

A line that passes through a circle

• Secant
• Tangent
• Chord
• Radius

Name a chord.

• Segment XC
• Segment LM
• Segment HJ
• LINE BD