Geometry

Question Analysis:
This problem combines a cube and a square pyramid — a clean, real-world composite solid.

Key Concept Explanation:
Volume of cube = side³
Volume of square pyramid = (1/3) × side² × height

Step-by-Step Solution:
Cube: 6³ = 216 m³
Pyramid: (1/3) × 6 × 6 × 4 = (1/3) × 36 × 4 = (1/3) × 144 = 48 m³
Total = 216 + ...