The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of Rs 7.50 per .
Length of the room m
Breadth of the room m
Height of the room m
Surface area of four walls + Ceiling
Cost of white washing the four walls and the ceiling @Rs 7.5 per Rs