What is the formula for the area of square?

Answer 1

Because a square has its Length = Width, formula for its area can be written as

length x length or

width x width or

length x width

but generally it is written as L2 (L square)

where L is length

Answer 2

Multiply length by width

So a 6 inch square would have an area of 6 x 6 = 36 square inches (can be written as: 36in2).