a rectangular room is twice its breadth.It contains four windows of size2m*1.75m each and 2 doors of size 1m and 3.5m.If 24 pieces of tiles of size 2m*1.5meach are required for tiling its floor and 41 pieces of 3d paper of size 3msq each,are required for pasting on its four walls ,find the height of the room.(i had seen the answer but there is a problem how is x equal to 6)