The wall is covered with wallpaper, leaving 2 feet from all the 4 sides. Find the area of the wall covered with wallpaper.
The dimensions of a room are 8 m×6 m×h. It has two doors each of size 2 m×1 m and one almirah of size 3 m×2 m. The cost of covering the walls by wallpaper which is 40 cm wide at Rs. 1.25 per metre is Rs. 362.50. Find height.