Answer:
3190.56 m³
Step-by-step explanation:
Volume of the top pyramid
= 1/3 x (20.4 x 12) x 9.1
= 742.56 m³
Volume of the bottom cuboid
= 10 x 20.4 x 12
= 2448 m³
Total volume
= 2448 + 742.56
= 3190.56 m³
