1.

A wooden cube is painted BLUE on all six faces. The side of this cube is 4 cms. It is cut into smaller cubes of side 1 cm. Answer the following questions based on this statement. How many cubes have only one face coloured?

Answer»

4
8
16
24

Solution :REMEMBER the formulae to answer these QUESTIONS. X, the side (edge) of the large cube is 4 CM, the edge of the small cube x is 1 cm.
Number of cubes having ONE FACE painted
= `6xx(X/x-2)^(2)=6(4/1-2)^(2)=24`.


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