A living room is 8 meters long, 6 meters wide and 3 meters high. If you stick a drift on the walls a

The surrounding area = 8 * 3 * 2 + 6 * 3 * 2-10 = 74 (square meters), roof area = 6 * 8 = 48 (square meters).

Not sticking to the roof: 74 * 30 = 2220 yuan.

Sticking to the roof: (74 + 48) * 30 = 3660 yuan.

There may be about 5% loss when actually pasting.

If it's a math problem, don't think about it.

What is the width of the door?

At the same time, the calculation of wallpaper is generally sold according to the volume. Generally speaking, the size is 10m in length, because the wallpaper also needs to deduct the width of the door.

First of all, the perimeter of the room = (8 + 6) * 2, that is, = 28m The total width of the wallpaper surface = The perimeter of the room - the width of the window - the width of the door Secondly, the size of the wallpaper is generally (width, length 10m) The height is three meters, so a roll can be cut into three paving.

One meter of which is used as a flower loss width is.

Finally: Number of wallpaper rolls needed = total width of the wallpaper face

The amount of money needed is how much is per roll * number of rolls.