Respuesta :

Answer:

3cm

Step-by-step explanation:

since a square's side lengths are all equal, we can work our way down.

A=lw

9=lw

9=2l or 2w

3=l or w

Answer:3

Step-by-step explanation:

if the square has an area on 9 you would multiply two sides and the two sides would have to be 3