Circumference

Front

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

Back

Circumference = π × diameter (C = πd)

Front

What is the value of π (pi) approximately?

Back

3.14

Front

If the diameter of a circle is 10 inches, what is the circumference? (Use 3.14 for pi)

Back

31.4 inches

Front

What is the relationship between diameter and radius?

Back

Radius = Diameter / 2

Front

If the radius of a circle is 6 cm, what is the diameter?

Back

Diameter = 12 cm (Diameter = 2 × radius)

Front

What is the circumference of a circle with a diameter of 9 inches? (Use 3.14 for pi)

Back

28.26 inches

Front

What is the radius of a circle with a circumference of 31.4 inches? (Use 3.14 for pi)

Back

5 inches (Radius = Circumference / (2π))

Front

What is the diameter of a circle with a circumference of 157 mm? (Use 3.14 for pi)

Back

50 mm (Diameter = Circumference / π)

Front

What is the formula to find the radius if you know the circumference?

Back

Radius = Circumference / (2π)

Front

What is the circumference of a circle with a radius of 3 cm? (Use 3.14 for pi)

Back

18.84 cm