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