MP Board · Class 9 · Mathematics · Surface Areas and VolumesTotal surface area of a cube whose edge is $a$ is:
Step-by-Step Solution
A cube has 6 square faces, and the area of each square face with side length $a$ is $a^2$. Therefore, the total surface area of a cube is the sum of the areas of all its 6 faces, which is $6a^2$. Hence, the correct option is $6a^2$.
Detailed Options Breakdown
Option : 4a^2
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Surface Areas and Volumes.
Option 1: 6a^2 (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: a^3
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Surface Areas and Volumes.
Option 3: 8a^2
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Surface Areas and Volumes.
💡 Study Guide: This question tests core syllabus concepts from Surface Areas and Volumes. For formulas, key summaries, and mock exam reference guides, read the full Surface Areas and Volumes Revision Notes.