Obviously, the walls of the room need to be repainted. The room is 4m long, 3m wide, and 3m high. Excluding the door and window area of 4.7m**2, 0.6kg of paint is used per square meter, how many kg of paint is needed?
明明的房间四壁要粉刷一新，房间长4m，宽3m，高3m．除去门窗面积4.7m**2，每平方米用涂料0.6kg，要多少kg油漆？
<result>29.581</result>