Circumference of Circles

What number represents π?

• 31.4

• 4.13

• 3.14

• 34.1

If my radius is 2 yd what is the circumference?

• 4 yd
• 1 yd
• 12.56 yd
• 6.28 yd

Find the circumference with a radius of 5.8 cm.

• 37 cm

• 38.3 cm

• 36.4 cm

• 42.7 cm

Find the circumference of the circle.

• 38.47 cm

• 10.99 cm

• 43.96 cm

• 21.98 cm

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

• 9 meters
• 28.26 meters
• 56.52 meters
• 18 meters

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

The radius of a circle is ​ (a)   the diameter.

• half
• twice
• triple

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

• Diameter
• Radius

If my diameter is 19 inches, what is my radius?

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

Find the circumference (to the nearest whole number)

• 88 in
• 44 in
• 116 square in
• None of the above