Find the area of the four walls of a room whose length is 6m , breadth 5m and height 4m . Also find the cost of white washing the walls, if the rate of white washing is Rs 5 per square meter . (Doors , windows and other openings ignored).

Answers (1)

Solution: Here , l=6m b=5m and h=4m

	herefore             Area of the walls =2h(l+b)=left  2	imes4	imes(6+5) 
ight m^2=88m^2

               cost of white washing of 1  square metre =5Rs

	herefore               cost of white washing the walls = Rs(5	imes88)=Rs440

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