A cube with side length 4 has surface area which of the following?

A cube with side length 4 has surface area which of the following?

• A. 96
• B. 64
• C. 128
• D. 72

Answer: (A)

For a cube, surface area is found by taking the area of one square face and multiplying by the number of faces, which is six. Each face has area side length squared, so with side length 4, one face is 4 × 4 = 16. Multiply by 6 faces: 6 × 16 = 96. So the surface area is 96 square units. The other numbers come from common missteps, like confusing surface area with volume (4^3 = 64) or misapplying the multiplication.

For a cube, surface area is found by taking the area of one square face and multiplying by the number of faces, which is six. Each face has area side length squared, so with side length 4, one face is 4 × 4 = 16. Multiply by 6 faces: 6 × 16 = 96. So the surface area is 96 square units. The other numbers come from common missteps, like confusing surface area with volume (4^3 = 64) or misapplying the multiplication.