A cube of edge 8 cm is painted blue from all its faces. it is cut into small cubes of surface area 24 cm2. how many such cubes shall have two faces painted?
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surface area of the cube of edge = a = 8cm
= 6a²
= 6(8)²
= 6(64)
= 384cm²
surface area of the cube which have two faces painted. = A = 24cm²
number of cubes which have only two faces = 384/24 = 16
= 6a²
= 6(8)²
= 6(64)
= 384cm²
surface area of the cube which have two faces painted. = A = 24cm²
number of cubes which have only two faces = 384/24 = 16
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