Question

What is the volume of the prism?

Answer 1

Use the equation. V=L*W*H 
L=6cm 
W=2 1/2 cm  = 5/2
H=4 1/2 cm = 9/2

V=6*5/2*9/2
V=(6*5*9)/(2*2)
V=270/4

V=67 1/2cm^3

note. This is a cube, not a triangular prism. 

Answer 2

The volume of a triangular prism ... you multiply the base times the height.