Volume of 1 cube → 8 × 8 × 8 = 512 cm³
Volume of 5 cubes → 5 × 512 cm³ = 2560 cm³
Capacity of tank → 2560 cm³ + 512 cm³ = 3072 cm³
Area of tank's square base → 32 cm × 8 cm = 256 cm²
Height → 3072 ÷ 256 = 12 cm
Answer → 12 cm
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