Answer: (2, 3).
- A (2, 3)
- B (−2, −3)
- C (4, 6)
- D (−4, −6)
Correct answer: A. (2, 3)
Explanation: Centre = (−g, −f) with 2g = −4, 2f = −6, giving (2, 3).
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