Step-by-step explanation:
for a pyramid,
h = 50m
b = 40m
w = 20m
[tex] Volume = \frac{h \times b \times w}{3} \\ \\ Volume = \frac{50 \times 40 \times 20}{3} \\ \\ \huge{\boxed{ \implies Volume = 13333.33 {m}^{3} }} [/tex]
