The intenal measures of a cubical room are 12m x8m x4m Find the total cost ofwhite washing all four walls of a room, if the cost of white washing is 5permWhtwill be the cost of white washing, if the ceiling of the room is also white washed.

The intenal measures of a cubical room are 12m x8m x4m Find the total

1.	The intenal measures of a cubical room are 12m x8m x4m Find the total cost ofwhite washing all four walls of a room, if the cost of white washing is 5permWhtwill be the cost of white washing, if the ceiling of the room is also white washed.
Answer» 2(l+b)h = LSA2(12+8)4 =2(20)4 = 404 = 160m²cost of whitewashing 4 walls =1608 = Rs 1280area of 5 walls = LSA+ lb = 160 + (128) = 160 + 96 = 256m²cost of whitewashing vd ceiling = Rs 1280 +(96*8) = Rs 1280 + 768 = Rs 2048