Answer:
A. 84 cubic inches
Explanation:
Volume = volume of triangular prism + volume of rectangular prism
✔️Volume of triangular prism = ½*b*h*l
b = 4 in.
h = 4.5 in.
l = 4 in.
Volume of triangular prism = ½*4*4.5*4 = 36 in.³
✔️Volume of rectangular prism = L*W*H
L = 4 in.
W = 4 in.
H = 3 in.
Volume of rectangular prism = 4*4*3 = 48 in.³
✔️Total volume = 36 + 48 = 84 in.³