For a cylinder and a cone, the circumference of their bottom surface is equal, and the ratio of height is 8:9, then the ratio of their volume is ()

For a cylinder and a cone, the circumference of their bottom surface is equal, and the ratio of height is 8:9, then the ratio of their volume is ()

If the perimeter of the bottom surface is equal, the radius and area of the bottom surface are equal
Their volume ratio
=(1*8):(1*9/3)
=8:3