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A room is 13 feet long and 9 feet broad and 10 feet high Find the cost of painting the four walls of the room at 15 per square feet it being given that the doors and the windows occupy 40 sq fee?
Evalodge
Area of 4 walls = 2(length + breadth) * height
= [2(13 + 9) * 10] sq feet = 440 sq fet
Area to be painted = (440 - 40) sq feet = 400 sq feet
Cost of painting = $(400 * 15) = $ 6000
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