Volume of the metal sheet = l × b × h = 27 × 8 × 1 = 216 cm3 Volume of the cube = Volume of the metal sheet Side of the cube = a3 = 216 a = 6 cm Area of the metal sheet = 2 (lb + bh + hl) = 2 (27 × 8 + 8 × 1 + 1 × 27) = 502 cm2 Area of the cube = 6a2 = 6 × 6 × 6 = 216 cm2 Difference between two solids = 502 − 216 = 286 cm2.