Circumference (11/29)

Front

What is the formula for calculating 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, representing the ratio of a circle's circumference to its diameter.

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 cm?

Back

Circumference = 2 × π × 5 ≈ 31.4 cm.

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 14 meters?

Back

Circumference ≈ 14 × π ≈ 43.98 meters.

Front

If the circumference of a circle is 37.68 meters, what is the approximate radius?

Back

Radius = Circumference / (2 × π) ≈ 6 meters.