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
.
Solution:
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
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