Answer: 32.
- A 60
- B 32
- C 16
- D 30
Correct answer: B. 32
Explanation: Perimeter = 2(l + b) = 2(10 + 6) = 32.
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