Answer: 336in^3
Step-by-step explanation: In order to find the volume of a trapezoidal prism, you'll need to go by the formula of 1/2 (base 1 + base 2) x height x length.
In this case, you'll need to do 1/2 ( 10 + 4) x 6 x 8 and you should receive the answer of 336.