Answer:
V = 320 in³
Explanation:
Equation for a volume of a pyramid: V = ¹/₃bh, where b = area of the base, h = height
1. Find the area of the base: (rectangular: l * w) 10 * 8 = 80 in²
2. Find the volume:
Plug in: V = ¹/₃ * 80 in² * 12 in
Multiply: V = 80 in² * 4 in --> V = 320 in³