Circumference and Area

What number represents π?

• 31.4

• 4.13

• 3.14

• 34.1

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

What does C represent in the formula:

C = π·d

• Pi

• Circumference

• Diameter

• Area

What is the diameter of a circle?

• the distance around a circle

• the area of a circle

• halfway through a circle

• a line through the center of a circle

What number represents π?

• 31.4

• 4.13

• 3.14

• 34.1

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

Find the circumference of the circle.

• 14.13 cm

• 63.56 cm

• 28.26 cm

• 127.17 cm