## ** Constants**

**Algebra - Constants**

Algebraic Constants

What is a constant in algebra?

A constant is something that is constant

A constant is something that does not vary

The number that we need

to multiply the radius of a circle by

to get the diametre

**is always 2.**

Diametre of circle = 2 × Radius of circle

The number that we need

to multiply the side of an equilateral triangle by

to get the perimeter

**is always 3.**

Perimeter of equilateral triangle = 3 × Length of side

The number that we need

to multiply the diametre of a circle by

to get the circumference

**is always π (pi)**

Circumference of circle = π × Diametre of circle