Circle Properties

Circle Properties

Circumference

• The distance around a circle
• Calculated using the formula: Circumference = 2 × π × Radius
• Alternatively, Circumference = π × Diameter

Diameter

• The longest distance across a circle, passing through its center
• Twice the length of the radius
• Calculated using the formula: Diameter = 2 × Radius

Radius

• The distance from the center of a circle to its edge
• Half the length of the diameter
• Calculated using the formula: Radius = Diameter ÷ 2

Pi (π)

• A mathematical constant approximately equal to 3.14159
• An irrational number, meaning it cannot be expressed as a finite decimal or fraction
• Used in circle calculations, such as Circumference = π × Diameter

Circle Properties

• The circumference of a circle is the distance around it.
• Circumference is calculated using the formula: Circumference = 2 × π × Radius or Circumference = π × Diameter.
• The diameter of a circle is the longest distance across it, passing through its center, and is twice the length of the radius.
• Diameter can be calculated using the formula: Diameter = 2 × Radius.
• The radius of a circle is the distance from its center to its edge, and is half the length of the diameter.
• Radius can be calculated using the formula: Radius = Diameter ÷ 2.

Pi (π)

• Pi (π) is a mathematical constant approximately equal to 3.14159.
• Pi is an irrational number, meaning it cannot be expressed as a finite decimal or fraction.
• Pi is used in circle calculations, such as Circumference = π × Diameter.

Learn about the properties of a circle, including circumference, diameter, and radius, and how to calculate them using formulas.