Answer:
tldr: take one of the sides of the square and multiply by 4
Step-by-step explanation:
hi there!
this one's tough. you'd need to know the length of one side of the lettuce garden, or even any length in the inside of it, but if you have no variables it's very hard to figure out it's perimeter, much less a length of one of the sides.
if you have any more information it should be a much easier question! just take one of the lengths on the side and multiply it by four.
if you're confused, here's a brief run down; each side of a square is the same length, since that's one of the properties of a square. the perimeter is the border of the shape, or the length of all of the outsides. since a square has four sides, and all the of the sides are the same length, you can effectively multiply one of the sides by four to get the perimeter. this doesn't work for every shape, of course, but it's a good general rule for perimeters of squares.
here's an equation for the perimeter of a square to visually see what i'm explaining:
P = perimeter
a = one of the sides