A room of dimensions 12 8 6 in meters has one door of dimensions 0 5 0 4 in meters and one more wind...........

Quantitative Aptitude ( CCS) Mensuration 3D

A room of dimensions 12*8*6 in meters has one door of dimensions 0.5*0.4 in meters and one more window of dimensions 1*0.5 in meter. Find the cost of applying paint on the four walls along with the ceiling of the room but excluding the door and windows at Rs. 40/m².

Rs. 13298

Rs. 11267

Rs. 14259

Rs. 13284

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Explanation:

Area of four walls along the ceiling = 2*(12+8)*6+12*8
= 336 m²
Area of all windows = (2*0.5*0.4) + (1*0.5) = 0.9 m²
Area of door = 2*1.5 = 3 m²
Area to be painted = 336 – 3.9 = 332.1 m²
Required cost = 332.1*40 = Rs. 13284