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A 4 cm cube is cut into 1 cm cubes. The total surface area of all the small cubes is :
Answer & Solution
Correct Answer:
Option
D
Number of small cube formed :
$$\eqalign{ & = \left( {\frac{{4 \times 4 \times 4}}{{1 \times 1 \times 1}}} \right) \cr & = 64 \cr} $$
Total surface area of the small cubes :
$$\eqalign{ & = \left[ {64 \times \left( {6 \times {1^2}} \right)} \right]{\text{c}}{{\text{m}}^2} \cr & = 384{\text{ c}}{{\text{m}}^2} \cr} $$
$$\eqalign{ & = \left( {\frac{{4 \times 4 \times 4}}{{1 \times 1 \times 1}}} \right) \cr & = 64 \cr} $$
Total surface area of the small cubes :
$$\eqalign{ & = \left[ {64 \times \left( {6 \times {1^2}} \right)} \right]{\text{c}}{{\text{m}}^2} \cr & = 384{\text{ c}}{{\text{m}}^2} \cr} $$
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