What is the area of a square with the sides of length 9?

Answer 1

The area of square is : 81.0

Answer 2

A square will have equal length and width. Multiplying the length by the width will give the area in square units.
Therefore: 9 x 9 = 81 square units
(9 is not given a size in the question? So could be in metres, centimetres, feet, yards, etc?)

Answer 3

area_square = side_length²

→ area = (9 units)² = 9 units × 9 units = 81 square units (or 81 units²)