Finding the Circumference

What is the Circumference of a circle with a diameter of 6 inches?

• 56.52 inches

• 18.84 inches

• 25.12 inches

• 28.26 inches

What is the circumference of a circle with a radius of 9 centimeters?

• 18.84 cm

• 25.12 cm

• 56.52 cm

• 12.56 cm

What is the circumference of a circle with a radius of 4 m?

• 18.84 m

• 12.56 m

• 25.12 m

• 28.26 m

What is the circumference of a circle with a radius of 2 yd?

• 18.84 yds

• 25.12 yds

• 12.56 yds

• 6.28 yds

A circular swimming pool is 21 feet in diameter. What is the circumference of the swimming pool? Use 22/7 for pi.

• 66 ft

• 33 ft

• 132 ft

• 121 ft

• ✓

• X

If my radius is 2 yd what is the circumference?

• 4 yd

• 1 yd

• 12.56 yd

• 6.28 yd

If my diameter is 90cm, what is my circumference?

• 282.6cm

• 180 cm

• 90cm

• 565.2cm

Find the circumference with a radius of 5.8 cm. Use 3.14 for pi.

• 37 cm

• 38.3 cm

• 36.4 cm

• 42.7 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