Answer:
The answer to your question is 365040000 lb or 3.65 x 10⁸ lb
Step-by-step explanation:
Data
Rectangular pyramid
base = 100 yd x 78 yd
height = 100 yd
weight of a stone = 468 lb/yd³
Process
1.- Calculate the volume of the pyramid
Volume = area of the base x height
-Substitution
Volume = 100 x 78 x 100
-Simplification
Volume = 780000 yd³
2.- Calculate the weight of the pyramid
468 lb ------------------------ 1 yd³
x ------------------------780000 yd³
x = (780000 x 468) / 1
x = 365040000 lb or 3.65 x 10⁸ lb
