r = 3 is the radius and h = 9 is the height
Plug these items into the formula below, for the volume of a cone, then simplify:
V = (1/3)*pi*r^2*h
V = (1/3)*pi*3^2*9
V = (1/3)*pi*9*9
V = (1/3)*pi*81
V = (1/3)*81*pi
V = 27pi cubic inches
Final Answer: Choice B) 27pi