what's the volume of the figure

Answer:
b
Step-by-step explanation:
The volume (V) of the triangular prism is
V = area of triangular end × length
area of triangle = [tex]\frac{1}{2}[/tex] × 3.4 × 2.5 = 4.25 in², hence
V = 4.25 × 4.8 = 20.4 in³ → b
Answer: B
Step-by-step explanation:
The volume of a triangular prism can be achieved by the equation:
[tex]V=\frac{1}{2} *l*w*h[/tex]
similar to finding the volume of a regular right triangle, where you have:
[tex]a=\frac{1}{2} b*h[/tex]
Here all you are adding is the dimension of depth by multiplying that depth (l) by the equation for the area.