Circumference of a Circle with Exact Pi

The perimeter around a circle is the ____

• Perimeter

• Radius

• Diameter

• Circumference

The ratio between the circumference and the diameter of a circle is ____

• Congruent

• Diameter

• Pi

• Like term

Find the exact circumference of a circle with diameter of 20 inches.

• 40 π in

• 100 π in

• 10 π in

• 20 π in

Find the exact circumference of a circle with a radius of 14

• 14 π

• Cherry π

• 7 π

• 28 π

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

• 36π

• 9π

• 4.5π

• 18π

Find the circumference of the circle.

• 78.5 cm

• 15.7 cm

• 7.85 cm

• 19.6 cm

What does Pi represent?

• The ratio of a square's perimeter to its area

• The ratio of a circle's diameter to its circumference

• The ratio of a rectangle's length to its width

• The ratio of a circle's circumference to its diameter

Find the circumference of the circle.

• 14.13 cm

• 63.56 cm

• 28.26 cm

• 127.17 cm

What is Pi?

• Ratio of Circumference to diameter

• The distance around the outside of a circle

• The distance from one side of a circe to the other through the center

• The distance from the center of a circle to the outside

Find the circumference of the circle.

• 31.4 cm

• 78.5 cm

• 314 cm

• 15.7 cm