Question

If the windows and door in the above room are made up of20% of the wall area,how much paint will be needed to give the four walls(excluding the windows and door)two coats of paint if a litre of paint is used to cover 18msquare in one coat.

Answer 1

57.6 litre paint will be needed to give the four walls.

Step-by-step explanation:

LSA of room = 4a^2

                     = 4(18)^2

                     = 1296 m^2

Area of windows and room = 20% of 1296 m^2

                                              = 259.2 m^2

Area left = 1036.8 m^2

              = 1036.8/18 = 57.6 Iitre

We can conclude that:

LSA of room 1296 m^2

Area of windows and room =259.2 m^2

Area left 1036.8 m^2

Paint 57.6 Iitre

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Answer 2

Step-by-step explanation:

I can't explain it anymore it took so much time to solve it