Answer: 88 cm.
- A 88 cm
- B 44 cm
- C 154 cm
- D 28 cm
Correct answer: A. 88 cm
Explanation: Circumference = 2πr = 2 × (22/7) × 14 = 88 cm.
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