This one is difficult

The volume of the cone is

V=Sb×h/3=(pi×r²)×h/3=(pi×d²/4)×h/3=pi×d²×h/12

where Sb is the area of the base (circle of diameter d and radius r) and h is the height.

Remember d=2r, or r=d/2.

V=pi×12²×9/12=pi×12×9=108×3.14= 339.12cm³.

Rounded to the first tenth: 339.1cm³

answer: first option: 339.1cm³

29 mil

step-by-step explanation:

the bolded word " farsighted" could be replaced with visionary.