The side length of the small tile is 30 cm, and the living room area is 1140 square decimeters

The kitchen is 212 centimeters long and 125 centimeters wide, and the square floor tiles with a side length of 30 centimeters need (30 tiles). >>>More

If the floor is laid, then this 5 cm height difference is just right; If you don't want to use a wooden keel and want to make the floor as flat, then the only way to do this is to raise the floor of the bedroom with fine stone concrete. For example, to lay laminate flooring, as long as the thickness of the laminate floor is determined, and then according to the height of the living room floor, the bedroom floor is one layer lower than the living room floor.

The size of a 20 brick is the same as the size of 4 10 bricks, so the area ratio of a single block is 4:1, and the quantity ratio is the inverse ratio of 1:4 to the area ratio, so it is 800 4=200

Personally, I think: you first look at the drawings clearly, it is written that it is 30 that is down 3 cm, if the elevation of the board drops 300, that is down 30 cm, it is also possible, now there are places that are sinking toilets, he arranges the toilet for the owner himself, the location of the basin, it is very simple, this kind of drawing can not be you put the toilet and basin, ask the plumber to know.

m X18 = m.

m X14 = m square meter. >>>More