Volume of a cone = pi * r² * (h/3)
If your diameter is 2, then take half of that for the radius; your radius is 1
Now plug in your given info:
V = pi * (1)² * (7/3)
= pi * 1 * (7/3)
= 7pi / 3
V ≈ 7.3304
Your answer is option D.
Answer:

Step-by-step explanation:
h has to be 2 or more since there is at least 2 hours.
it's d !!!!!!!!!!!!!!!!!!!!!!!!!!
The triangles are similar by AAA so make ratios and solve