Answer:
The volume of cone B is twice the volume of cone A.
Explanation:
Cone A
Height of cone = 3 m
Radius of Cone = 2 m
Volume of cone =

=

=

Cone B
Height of cone = 6 m
Radius of Cone = 2 m
Volume of cone =

=

=

Now

Thus the volume of cone B is twice the volume of cone A.