Answer:
[tex]A=162[/tex]
Step-by-step explanation:
The are of a square is [tex]A=a^{2}[/tex] so 9 root 2 is [tex]9\sqrt{2}[/tex] since the formula says that a need to be squared so we need to square 9 root 2 [tex](9\sqrt{2})^{2}[/tex] which would be [tex]162[/tex] or another way would be to turn 9 root 2 into a decimal [tex]9\sqrt{2} = 12.727292206...[/tex]then you would square that number just like we did in the first example [tex](12.7272206)^{2}[/tex] which would give you [tex]161.98[/tex] then all you have to do is round to the nearest tent then you would get [tex]162[/tex] as an answer
i would agree that this step requires to much work so just stick with the first way to do it.
thank you for waiting for this answers i hope it helps a lot i went into details to make sure that you understand if you still don't get it just post another question ill be more than happy to help you out.