Circumference of Circle

What is the formula to calculate the circumference of a circle using its diameter?

• C = π * d

• C = π / d

• C = 2 * π * r

• C = 2 * d

Tags

CCSS.7.G.B.4

If the diameter of a circle is 14 cm, what is its circumference? (Use π = 3.14)

• 36.78 cm

• 43.96 cm

• 28.26 cm

• 10.5 cm

Tags

CCSS.7.G.B.4

A circle has a diameter of 20 meters. What is its circumference? (Use π = 3.14)

• 15.7 meters

• 62.8 meters

• 100 meters

• 40 meters

Tags

CCSS.7.G.B.4

Find the circumference of a circle with a diameter of 8 inches. (Use π = 3.14)

• 10.36 inches

• 25.12 inches

• 6.72 inches

• 16.28 inches

Tags

CCSS.7.G.B.4

If the diameter of a circle is 18 cm, what is its circumference? (Use π = 3.14)

• 36.84 cm

• 56.52 cm

• 25.12 cm

• 42.78 cm

Tags

CCSS.7.G.B.4

A circle has a diameter of 30 meters. What is its circumference? (Use π = 3.14)

• 120 meters

• 94.2 meters

• 60 meters

• 45 meters

Tags

CCSS.7.G.B.4

Find the circumference of a circle with a diameter of 12 inches. (Use π = 3.14)

• 9.42 inches

• 37.68 inches

• 24.56 inches

• 15.72 inches

Tags

CCSS.7.G.B.4

If the diameter of a circle is 25 cm, what is its circumference? (Use π = 3.14)

• 78.5 cm

• 125 cm

• 100 cm

• 50 cm

Tags

CCSS.7.G.B.4

A circle has a diameter of 16 meters. What is its circumference? (Use π = 3.14)

• 25.12 meters

• 12.56 meters

• 8 meters

• 50.24 meters

Tags

CCSS.7.G.B.4

Find the circumference of a circle with a diameter of 22 inches. (Use π = 3.14)

• 15.38 inches

• 30.24 inches

• 44.56 inches

• 69.08 inches

Tags

CCSS.7.G.B.4