Explanation:

Volume of the cuboid = 9 × 8 × 6 = 432cm³

Volume of the cube = 1/2 × 432 = 216cm³

Therefore, Each side of cube = 3√216 = 6 cm

Total surface area of the cube

= 6×(Side)² = 6×6²

= 6×36 =216 cm³

Hence, option 2 is the correct answer.