Answer:
3
Explanation:
Volume if a cone is given by the formula
V=⅓πr²h
Where V is the volume, r is radius and h is height.
Given diameter as 3 m, the radius will be half of this hence 3/2=1.5 m
Substituting 4m for h and 1.5 m for r then
V=⅓π×1.5²×4=3π m³
Therefore, the missing figure is 3