How to calculate the hotel kitchen area?

For example, the kitchen is 3 meters long, 2.5 meters wide and 3 meters high. The wall area should be the perimeter of the kitchen multiplied by the height (2.52.533)*3=33. Then the area after removing the doors and windows is about 31. Mainly depends on the size of your windows. The door area is basically more than one square meter. The final wall area is about 22 square meters. The floor area is 7.5 square meters. Then divide the area of ??the brick you selected by the area of ??the wall. For example: bricks are 300*450=0.135, and the same is true for the ground.