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

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

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

• diameter
• radius
• π
• center

Tags

CCSS.HSG.CO.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 , find the radius of the circle.

• 10 π
• 10
• 50
• 50 π

Tags

CCSS.7.G.B.4

what is the formula for finding diameter

• r = 2 d

• d = 2 r

• a = m c²

• c = π 2 r

Tags

CCSS.7.G.B.4

what is the formula for finding radius

• c = π d

• c = 2 π r

• d = r/2

• r = d/2

Tags

CCSS.7.G.B.4