UPCAT Mathematics practice question 27: What is the total surface area of a cube with an edge of 5 cm?
Correct answer
D. 150 cm²
A cube has 6 congruent square faces: 6 × 5² = 6 × 25 = 150 cm².
The question
What is the total surface area of a cube with an edge of 5 cm?
- Option A: 25 cm²
- Option B: 100 cm²
- Option C: 125 cm²
- Option D: 150 cm²Correct
Why D is correct
A cube has 6 congruent square faces: 6 × 5² = 6 × 25 = 150 cm².