What is the answer to this please ??

Answer:
C) 12 in.
Step-by-step explanation:
The volume of this triangular prism is 1/2 * l * w * h = V.
Plugging in the numbers we know gives us 1/2 * 6 * 4 * h = 144 in³.
Simplify: 12 * h = 144
Divide both sides by 12: h = 12 in.