How many feet are contained in one dekametre?

Answer 1

1 ft = 0.3048 m (exactly)

→ 1 m = 1/0.3048 ft

The deka- prefix means ten → 1 dam = 10 m

→ 1 dam = 10 m = 10 / 0.3048 ft ≈ 32.9 ft.