SOLUTION: if the area of a square is 81 how do i find the lenghth???

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Question 654693: if the area of a square is 81 how do i find the lenghth???
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
A = s^2

81 = s^2

s^2 = 81

s = sqrt(81)

s = 9

So the side length is 9 units