Answer:
The area of the pool is [tex]9a^{10}[/tex] units squared.
Step-by-step explanation:
The area of a square is length * width, which is the same as a side squared. Since it is given that it has side lengths of [tex]3a^{5}[/tex], the area is:
[tex](3a^{5})^{2} = 9a^{10}[/tex]
