Circumference (3rd try)

Front

What is the formula to calculate the circumference of a circle?

Back

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

Front

If the diameter of a circle is 10 meters, what is its circumference?

Back

Circumference = π × 10 ≈ 31.4 meters.

Front

What is the relationship between diameter and radius?

Back

The radius is half of the diameter (radius = diameter / 2).

Front

How do you find the diameter if you know the circumference?

Back

Diameter = Circumference / π.

Front

What is π (pi)?

Back

π (pi) is a mathematical constant approximately equal to 3.14.

Front

If a circle has a circumference of 62.8 meters, what is its diameter?

Back

Diameter = 62.8 / π ≈ 20 meters.

Front

What is the circumference of a circle with a radius of 5 meters?

Back

Circumference = 2 × π × 5 ≈ 31.4 meters.

Front

How many meters does Omar run if he completes 12 laps around a field with a diameter of 145 meters?

Back

Omar runs 12 × π × 145 ≈ 5464 meters.

Front

What is the approximate circumference of a circle with a diameter of 8 units?

Back

Circumference ≈ 25.12 units.

Front

If the circumference of a circle is 31.4 meters, what is the radius?

Back

Radius = Circumference / (2 × π) ≈ 5 meters.