Circumference of a Circle

The circumference of a circle is

• The measurement from an edge of a circle to another edge.

• The measurement around the circle

• The measurement from an edge of a circle to another edge going through the center

• The measurement from the center of the circle to an edge of the circle

The diameter of a circle is 3 centimeters. What is the circumference?

• 11.5cm2

• 9.42 cm2

• unicorns are awsome

• 45.3 cm2

What is the circumference? Round to the nearest whole number.

• 48

• 96

• 24

• 18

Find the circumference (to the nearest whole number)

• 88 in

• 44 in

• 116 square in

• None of the above

What is the circumference of a circle with a radius of 5 in terms of π ?

• 5 π square units

• 10 π square units

• 25 π square units

• 50 π square units

Which expression could be used to find the approximate circumference of this quilt piece?

• 2π16

• 2π8

• 2(8)

• 2(4)

A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?

• c = 15π

• C = 2π15

• c = 15 ÷ π

• c = 15 π

What is the formula for the perimeter of a circle? Select all that apply.

• 2 π r

• π d

• π d²

• π r²

What does "circumference" mean?

• Space a circle takes up

• Distance around a circle

• Line from one side of a circle to another

• Line from center of circle to side

A DVD has a diameter of 15 millimeters. What is the circumference?

• c = 15π

• C = 2π15

• c = 15/π

• c = 15/2π