The length, breadth and height of a room are 5 m, 4m 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 m2.
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Answered by
1
54×7.5
= 405 is the correct answer
= 405 is the correct answer
Answered by
3
Hey,
Area of four walls of the room (lateral surface area) = 2(l+b)*h
2(5+4)*3 m^2
=54 m^2.
So, cost of white washing = Area*7.50
Cost = Rs (54*7.50)
cost = Rs 450.
Area of four walls of the room (lateral surface area) = 2(l+b)*h
2(5+4)*3 m^2
=54 m^2.
So, cost of white washing = Area*7.50
Cost = Rs (54*7.50)
cost = Rs 450.
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