Circumference

Front

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

Back

Circumference = 2 × π × radius or Circumference = π × diameter.

Front

If the radius of a circle is 5 inches, what is the circumference?

Back

Circumference = 2 × π × 5 = 31.4 inches.

Front

What is the relationship between diameter and radius?

Back

Diameter is twice the radius (Diameter = 2 × radius).

Front

What is the diameter of a circle with a radius of 7 feet?

Back

Diameter = 2 × 7 = 14 feet.

Front

How do you convert circumference from inches to feet?

Back

Divide the circumference in inches by 12.

Front

What is the circumference of a circle with a diameter of 10 cm?

Back

Circumference = π × 10 ≈ 31.4 cm.

Front

What does the term 'perimeter' refer to in geometry?

Back

Perimeter is the total distance around a two-dimensional shape.

Front

If a circle has a circumference of 62.8 feet, what is its radius?

Back

Radius = Circumference / (2 × π) = 62.8 / (2 × π) ≈ 10 feet.

Front

What is the circumference of a circle with a radius of 12 inches?

Back

Circumference = 2 × π × 12 ≈ 75.4 inches.

Front

What is the unit of measurement for circumference?

Back

Circumference can be measured in units such as inches, feet, centimeters, or meters.