A perfect square is a number made by squaring a whole number.
It can also be described as the product of a whole number and itself.
Among the numbers given, you'll notice that only the number 36 suits the definition above:
[tex]\begin{gathered} 36=6\times6 \\ OR \\ 36=6^2 \end{gathered}[/tex]It can be written as square of a whole number or the product of a whole number and itself. In this case its the number 6.
So the right answer is 36.
