6. A rectangular room is 2,4 m high. The room is 4 m long and 3 m wide. The windows and doors take up an area of 9 m². a) Calculate the total wall area of the room. (Don't include the ceiling in your calculations.) b) One roll of wallpaper covers 6 m². Calculate how many rolls of wallpaper you need to cover the walls of the room. 9 cm ,5 cm 2. Cal 3. The equ b d)
