A cube of edge 4 cm is converted into a cuboid of height 4 cm, so the area of the base of the cuboid must be
8 cm2
12 cm2
24 cm2
16 cm2
A metal cube of 5 cm edge is melted and cast into a cuboid whose base is 2.5 cm × 0.5 cm. Then the height of the cuboid will be ___.