Which statement correctly identifies a cube?

Which statement correctly identifies a cube?

• A. A sphere with six square faces.
• B. A prism with six square faces.
• C. A solid with one curved surface and two bases.
• D. A solid with no faces.

Answer: (B)

Think of a cube as a six-faced box where every face is a square. That makes it a special prism: two square bases connected by square faces when the height matches the base size, so all six faces end up square. So describing it as a prism with six square faces fits the idea of a cube perfectly. The other statements don’t fit: a sphere can’t have square faces because it’s curved all around; a solid with one curved surface and two bases is a cylinder, not a cube; a solid with no faces would be something like a point, not a cube.

Think of a cube as a six-faced box where every face is a square. That makes it a special prism: two square bases connected by square faces when the height matches the base size, so all six faces end up square. So describing it as a prism with six square faces fits the idea of a cube perfectly. The other statements don’t fit: a sphere can’t have square faces because it’s curved all around; a solid with one curved surface and two bases is a cylinder, not a cube; a solid with no faces would be something like a point, not a cube.