The answer is 226 cubic inches.
Step-by-step explanation:
The formula to find the volume of cone is :

Now given height of the cone is = 6 inches
And Diameter is given as 12 inches. So, radius is = 12/2 =6 inches.
Putting these values in the formula, we get,
V =

V= 226.08≈ 226 cubic inches.
Hence, option B is the answer.