Explanation:
Hi, there!!!
Here, the question is about the volume of cone,
given that,
diameter = 12m
radius of a circle= 12m/2= 6m
height (h)=9 m
now, we have,
volume of a cone= 1/3×pi× r^2×h
or, v= 1/3×3.14×(6)^2×9
After simplifying it we get,
v= 339.12 m^3
Hope it helps....