What is a square needed for maths

A=a^2

Step-by-step explanation:

Geometry:

In geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles. It can also be defined as a rectangle in which two adjacent sides have equal length. A square with vertices ABCD would be denoted \square ABCD.

Square Roots:

In mathematics, a square root of a number x is a number y such that y² = x; in other words, a number y whose square is x. For example, 4 and −4 are square roots of 16, because 4² = ² = 16.

idk i would have to be there to under stand it

step-by-step explanation:

idk i would have to be there to under stand it