Math, asked by spacemaster7, 10 months ago

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

Answered by sooryasuresh
2

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.

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