What is the total surface area of a cuboid measuring 2 cm by 5 cm by 4 cm?
Answer and explanation
Correct answer: D. 76 cm²
- Step 1: The three pairs of faces give cm². Answer: 76 cm². Why not the others: 40 cm²: gives the volume. 38 cm²: forgets the factor 2. 28 cm²: counts only some faces.
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