Answer: Option A
A cone has a diameter of 6 cm
Diameter of the cone = 6cm
Firstly, we need to find the radius of the cone
Radius = diameter / 2
Radius = 6/2
Radius = 3cm
The height of the cone = 3 x diameter of the cone
Height = 3 x 6
Height = 18 cm
[tex]\begin{gathered} \text{Volume of a cone = }\frac{1}{3}\cdot\pi\cdot r^2\cdot\text{ h} \\ V\text{ = }\frac{1}{3}\cdot(3.14)(3cm)^2(18\operatorname{cm}) \end{gathered}[/tex]
Therefore, the answer is Option A
