Discussion
If the edge of a cube is 1 cm then which of the following is its total surface area?
Answer: C
A cube has six identical square faces.
\[ \text{TSA} = 6a^{2} = 6 \times 1^{2} = 6 \text{ cm}^{2} \]
The 1 cm² option is the area of a single face and the 4 cm² the four side faces, leaving out the top and bottom.
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