Find Circumference of a Circle in Terms of Pi

Find the circumference, in "in terms of pi" of a circle with a DIAMETER of 8 inches.

• 4π inches

• 8π inches

• 16π inches

• 64π inches

Find the circumference, in "in terms of pi" of a circle with a RADIUS of 22 inches.

• 11π inches

• 22π inches

• 44π inches

• 484π inches

Find the circumference, in "in terms of pi" of a circle with a RADIUS of 8 inches.

• 8π inches

• 64π inches

• 4π inches

• 16π inches

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's approximate circumference?

• 3 m 

• 9.42 m

• 12 m

• 18.84 m

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

• 36π

• 9π

• 4.5π

• 18π

The equation C = πd, is used to find the circumference of a circle given it's diameter. This formula can be rearranged to solve for pi. Which equation is written correctly to solve for pi?

• π = Cd

• π = C ÷ d

• π = d ÷ c

• π = C - d

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

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

The radius of the circle is 9 meters.  What is the circle's circumference?

• 9 meters

• 28.26 meters

• 56.52 meters

• 18 meters

Find the circumference of the circle in the image.

• 10π

• 20π

• 100π

• 20