A sculpture is cut from a wooden cylinder as shown in the figure.The sculpture is made up of a circular cone at the top,a cylinder in the middle which is height 5.5cm&a hemisphere at the bottom.It's found that 25% of the material is removed from the cylinder in order to make the sculpture.If the cone's ratio is 1.5cm,
(A)find the value of x which is the height of the cone
(B)If the cost of polishing a wooden object is $0.3 per cm^2, find the cost of polishing the whole surface of the sculpture.