Question 941522
One square of side length 1 inch will be 1 square inch, understanding that the single unit is the
shape of a square, and we use this as a reference for understanding.


The amount of surface, 72 square inches, is NOT a square value, said better, that number is not
a square number.



You may well understand the following, but it might not be what you really want to use alone:
Your square region is some s*s area, and this is {{{s*s=72}}}.
We want what is s.
{{{s=sqrt(s*s)=sqrt(72)}}}
{{{s=sqrt(2*2*3*2*3)}}}
{{{s=sqrt(2*3*2*3*2)}}}
Each pair of factors inside the square root function makes one copy of the factor outside
the square root function.
{{{s=2*3*sqrt(2)}}}
{{{highlight(s=6*sqrt(2))}}}