If the radius of a right circular cone is halved and height is doubled then what will be new volume?

If the radius of a right circular cone is halved and height is doubed, the volume remains unchanged.

If the radius of the base of a right circular cone by halved and its height be doubled , then the volume of the cone remains the same.

If the length of the radius of the base of a right circular cone be halved and its height be doubled, then the volume remains same.

If the length of the radius of a right circular cylinder is doubled and height is halved, then its lateral surface area will be

If the radius of the base of a cone is tripled and the height is doubled then the volume is

In a cylinder, if radius is halved and height is doubled, then volume will be

If the radius of a cylinder is doubled and height is halved, the volume will be doubled.

If the radius of a cylinder is doubled and height is halved, the volume will be doubled.