Finding Circumferences

What is the circumference? Round to the nearest whole number.

• 48

• 96

• 24

• 18

_{Find the Circumference.}

• 31.4 in

• 78.5 in sq

• 15.7 in

• 3.14 in 

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

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

What is the formula for finding the circumference of a circle?

• C = r²

• C = rd

• A = π·r²

• C = π·d

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.

• 78.5 cm

• 15.7 cm

• 7.85 cm

• 19.6 cm