The area of a square postage stamp is 81/100 in. squared. What is the side length of the stamp? What is the formula of the area of a square?

Answer 1

A = s^2
To find side of length

81/100 = s^2
sqrt(81/100) = sqrt(s^2)
9/10 = s

Answer 2

I got 0.81

Answer 3

81 will be 9
100 will be 10
So I think it’s c which is 9/10

Answer 4

Which is also 0.09