The number of square units it takes to completely fill a square.
Formula: Width × Height
Try this Drag the orange dots to move and resize the square. As the size of the square
changes, the area is recalculated.
The area of a square is given by the formula
area = width × height
But since the width and height are by definition the same,
the formula is usually written as
area = s2
where s is the length of one side.
In strictly correct mathematical wording the formula above should be spoken as "s raised to the power of 2", meaning s is multiplied by itself.
But we usually say it as "s squared". This wording actually comes from the
square. The length of a line s multiplied by itself, creates the square of side s. Hence "s squared".