Answer:
720 in³
Explanation:
The volume (V) of a right prism is calculated as
V = area of triangular end × length
area of Δ =
bh
where b is the base and h the perpendicular height
here b = 8 and h = 15, thus
area of Δ = 0.5 × 8 × 15 = 4 × 15 = 60 in²
The length of the prism is 12 in, hence
V = 60 × 12 = 720 in³