Question

A cube of side 4cm is painted black on the pair of one opposite surfaces, blue on the pair of another opposite surfaces and red on the remaining pair of opposite surfaces. The cube is now divided into smaller cubes of equal sides of lcm each. How many smaller cubes have 3 sides painted ?

Answer 1

Step-by-step explanation:

see it as a square

all 4 sides will be in touch with colour

in case of cube = 8 cubes (twice the sides of imagined square)

8 cubes will be having 3 sides coloured.

Answer 2

Answer:

Cubes which would have been on the vertices or corners would only have 3 sides painted as for a cube, it's vertice is the only point where the 3 faces of cube meet. Therefore the vertice of the larger cube should coincide with the vertice of smaller cubes. Since the vertices of larger cube is less therefore we will consider that.

Since the large cube (any cube) has 8 vertices or corners,

therefore only 8 cubes would have 3 sides painted.

Please mark it as brainliest.