Assume the side of cube = a cm
Volume of the cube (a3)= 125 cm3 => a = 5 cm
Length of the cuboid (L)= 10 cm
Breadth of the cuboid (B) = 5 cm
Height of the cuboid (H) = 5 cm
The surface area of the resulting cuboid = 2 (LxH + BxH + LxB)
= 2(10x5 + 5x5 + 10x5)
= 250 cm2