Formula

A rule or fact written with mathematical symbols.

It usually has:
• an equals sign (=)
• two or more variables (x, y, etc)


Example: The formula for the volume of a box is:   V = l × w × h

Which has these variables:
• V stands for volume,
• l for length.
• w for width,
• h for height,

When l=10, w=5 and h=4, then V = 10 × 5 × 4 = 200