*see attachment for the diagram of the prisms
Answer:
Prism A
Explanation:
✔️Volume of triangular prism (Prism A) = ½×bhl
b = 7 m
h = 9 m
l = 4 m
Volume of Prism A = ½ × 7 × 9 × 4
Volume of Prism A = 126 m³
✔️Volume of rectangular prism (Prism B) = L × W × H
L = 8 m
W = 2 m
H = 8 m
Volume of Prism B = 8 × 2 × 8 = 128 m³
✔️Prism A has the least volume