let's calculate the total expenditure of white washing the inner walls and ceiling except the doors and windows, where length, breadth and height of the 4 walls are 7.2m, 5.5m, 4.2m respectively. L and B of a door and 2 windows is 3m, 1.8m and 2.25m, 1.8m respectively.
Answers
Answer: Total surface area to be white washed=132.78m2
Multiply it with the cost of white washing per m2.
Step-by-step explanation:
Length of the wall is- 7.2m
Breadth of the wall is- 5.5m
Height of the wall is- 4.2m
Surface area of the ceiling- 7.2x5.5=39.6m2
Surface area of the front wall=7.2x4.2=30.24m2
Surface area of the back wall=7.2x4.2=30.24m2
Surface area of the right side wall=5.5x4.2=23.1m2
Surface area of the left side wall=5.5x4.2=23.1m2
Surface area of the door=3x1.8=5.4m2
Surface area of the window=2.25x1.8=4.05m2
Surface area of the windows=4.05+4.05=8.1m2
Total surface area of the walls and ceiling=39.6+30.24+30.24+23.1+23.1=146.28m2
Total surface area not be white washed=5.4+8.1=13.5m2
So total surface area to be white washed is= 146.28-13.5=132.78m2
Now multiply this with the cost of white washing per m2.
Since you didnt give the cost it couldnt be completed.