Cut a rectangular wood 8 cm long, 6 cm wide and 4 cm high into two rectangles. What is the maximum sum of the surface area of the two rectangles

Cut a rectangular wood 8 cm long, 6 cm wide and 4 cm high into two rectangles. What is the maximum sum of the surface area of the two rectangles

Original surface area 2 * (8 * 6 + 8 * 4 + 6 * 4) = 208cm2
And the area of the two faces will be increased correspondingly
So the sum of the maximum surface areas is
208+2*8*6=304 cm2