Answer: lbh.
- A 2(lb+bh+hl)
- B lbh
- C l+b+h
- D 2l+2b+2h
Correct answer: B. lbh
Explanation: Volume of cuboid = l × b × h. The surface area formula uses 2(lb+bh+hl).
Three standard 3D solids and their key formulas: a cylinder's volume scales with the full height, a cone's volume is exactly one-third of the cylinder with the same base and height, and a sphere's volume and surface area both follow distinct r-based formulas worth memorising separately.
Concept context
Perimeters, areas, and volumes of 2D and 3D shapes