alleryThe total surface area of a cube of side a is
A4 a squared
B6 a squared
Ca cubed
D12 a
Answer & Solution
Correct answer: B. 6 a squared
1. A cube has 6 identical square faces.
2. Each face has area a squared.
3. Total surface area = 6 a squared.
_Source: syllabus Mathematics, Ch 12 "Surface Areas and Volumes", §12.2_
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