Answer:
32cm
Step-by-step explanation:
Area of a square = side × side
Let one side be represented by (x)
Area of the square = (x)^2
; 64 = (x)^2
Hence...x = square root of (64)
; x = 8cm
Hence the perimeter of the square,
; 4 × (length of one side)
; 4 × 8cm
;Perimeter = 32 cm