Answer:
6 feet
Step-by-step explanation:
Volume = w × h × l
120 = 4 × 5 × l
l = 120 / 20
l = 6 ft
W = 4 ft.
H = 5 ft.
V = 120 ft³
120 = L × 4 × 5
120 = L × 20
L = 120/20
L = 6 ft.
