Yes I agree I don’t have a good night I have no idea what I am doing lol I just don’t have a problem I don’t
Square have 4 equal sides length = a
A = 255
A = a^2
255 = a^2 |sqrt
15 = a
P = 4a
P = 4*15 = 60
90 is not a square number because you cannot multiple two of the same number to get 90.
For example, 4 is a square number, because 2 x2 = 4
Likewise, 9 is a square number (3 x3), and 81 is a square number (9 x 9)
It’s b, use Desmos it helps a lot with this types of questions
