Math Ratio Reasoning with 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

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

• diameter
• radius
• π
• center

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

Which segment is a radius?

• LM
• DC
• BD
• ML

The distance around a circle

• area

• diameter

• circumference

• radius

the diameter of a circle is ______ the radius

• 10 times

• twice

• 3.14 times

• half

Tags

CCSS.HSG.C.A.2

A circle has a radius of 23 feet. What is the diameter of the circle?

• 23 feet

• 46 feet

• 1/2 feet

• none of the above

Tags

CCSS.7.G.B.4

The diameter of the circle is 92in. What is the radius of the circle?

• 92 in

• 45 in

• 3.14 in

• Answer is Not Here

Tags

CCSS.7.G.B.4