Radius and Diameter Circumference Formulas

What is the measurement around the outside of a circle called?

• Diameter

• Circumference

• Radius

• Center

Find Circumference. Leave answer in terms of pi (π)

• 36π

• 12π

• 6π

• 24π

Tags

CCSS.7.G.B.4

Daniel wants to buy cookies for her friend. The
radius of a cookie is 5 inches. What is the cookie’s 
circumference?

• 10 in

• 2.5 in

• 15.7 in

• 31.4 in 

Tags

CCSS.7.G.B.4

What is the circumference?

• 50.24

• 96

• 24

• 18

Tags

CCSS.7.G.B.4

What is the diameter?

• 5 in

• 10 in

• 3.14 in

• 15.84 in

Tags

CCSS.7.G.B.4

What is the formulas for circumference of a circle? (Select Two.)

• C = pi x r

• C = pi x 2r

• C = pi x D

• C = pi x 2D

Tags

CCSS.7.G.B.4

Wrapping ribbon around a vase.

• Area

• Circumference

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

• radius

• diameter

• circumference

• area

Tags

CCSS.7.G.B.4

A segment that has one endpoint at the center and the other endpoint on the circle is the __________.

• diameter

• chord

• radius

• secant

The distance all the way across the circle through the center is called the ______________________.

• radius

• diameter

• circumference

• area

Tags

CCSS.HSG.C.A.2