Circumference

What is the approximate numerical value of this sign?

• 3.11

• 3.14

• 4.13

• 6.28

What is the diameter of the circle?

• 2 yd

• 4 yd

• 8 yd

• 16 yd

What is the radius of the circle?

• 16 in

• 32 in

• 8 in

• 4 in

What is the circumference of this circle?  Round to the nearest tenth.

• 3.14 cm 

• 37.7 cm

• 24 cm

• 68.4 cm

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

What two formulas can you use to find the circumference?

• C = π·d

• C = π·r²

• C = 2·π·r

• C = d²

What does C represent in the formula:

C = π·d

• Pi

• Circumference

• Diameter

• Area

Find the circumference of the circle.

• 31.4 cm

• 78.5 cm

• 314 cm

• 15.7 cm

Find the circumference of the circle.

• 78.5 cm

• 15.7 cm

• 7.85 cm

• 19.6 cm

Find the circumference of the circle.

• 38.47 cm

• 10.99 cm

• 43.96 cm

• 21.98 cm