Subject: General Aptitude · Chapter: Volume and Surface Area · Exam: 2005 · Marks: · Difficulty:
A 4 cm cube is cut into 1 cm cubes. The total surface area of all the small cubes is
(a)$24 \mathrm{cm}^{2}$
(b)$96 \mathrm{cm}^{2}$
(c)$384 \mathrm{cm}^{2}$
(d)None of these
Answer
Answer (as printed): C
Explanation
Number of small cubes formed $=\left(\frac{4 \times 4 \times 4}{1 \times 1 \times 1}\right)=64$. Total surface area of the small cubes $=\left[64 \times\left(6 \times 1^{2}\right)\right] \mathrm{cm}^{2}$ $=384 \mathrm{cm}^{2}$.