[
  "Find the total volume of water added: 36 buckets x 10 L = 360 L.",
  "Convert to cubic metres: 360 L = 0.36 cubic metres. The tank base area is 2 x 1.5 = 3 square metres.",
  "Divide volume by base area to get height: 0.36 / 3 = 0.12 m = 12 cm."
]