Respuesta :

dylantgoff

Answer:

80

Step-by-step explanation:

the formula for a squares area is [tex]s^{2}[/tex]= A

the area is 400 so to find a side all you need to do is find the square root of 400, and that is 20

Finally multiply 20 by 4 so find the perimeter

hnicolestevens
80 cm is the perimeter of the square