Answer:
I would say D, 9 inches
Step-by-step explanation:
Cuz the the formula for square area: s^2
square have all perfect sides
So if we do 9^2 or 9*9 = 81
Which is closer to 80
8^2 = 64 not close to 80
And the other numbers are bigger so if we double them we only get far way from 80
