Pi and Diameter of Circle

The distance around a circle

• Diameter

• Radius

• Circumference

• Area

the distance from one endpoint to another that passes through the center of a circle

• circle

• radius

• circumference

• diameter

the ratio of a circles circumference to its diameter

• area

• circumference

• pi

• radius

Find the circumference of a circle with a diameter of 10 m.

• 31.4 m

• 314 m

• 3.14 m

• 3140 m

A circle has a diameter of 15.3 mi. What is the circumference of the circle?

• 48.042 mi

• 735.0426 mi

• 24.021 mi

• 183.76065 mi

A circle has a diameter of 6ft. What is the circumference of the circle?

• 18.84 ft

• 113.04 ft

• 36 ft

• None of the above

PI equals

• 22/7

• 3.14...

• both

• neither

A circle has a radius of 23 feet. What is the diameter of the circle?

• 23 feet

• 46 feet

• 1/2 feet

• none of the above

What is the formula for the circumference of a circle?

• C=2πr2

• C= π

• C=πr2

• C=πd

A circle has a diameter of 8cm. Find the circumference of the circle.

• 25.12 cm

• 4 cm

• 16 cm

• None of the above