Discussion
What is the total surface area of a cube whose edge measures 6 cm ?
Answer: D
Correct answer: 216 sq. cm
A cube has six identical square faces.
\[\text{Total surface area} = 6a^2 = 6 \times 6^2 = 6 \times 36 = 216 \text{ sq. cm}\]
The volume happens to be \(6^3 = 216\) cu. cm as well, which is a coincidence of the edge being 6.
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