The answer is the first one:
bc its not growing by a (-)1/2 and the 3rd one just doesnt make sense
About less than 3 inches :)
The volume of the cone is:
V=Sb×h/3=(pi×r²)×h/3, where Sb is the area of the base (circle of radius r) and h is the height.
V=pi×r²×h/3=pi×1.5²×5/3=11.775in³
The closest indicated value is the first one, 11.78in³
