plz give a proper well maintained answer
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Step-by-step explanation:
Given:
Length = 5 m, Breadth = 4 m, and Height = 3 m
Area of four walls of the room = 2h(l + b)
= 2 * 3(5 + 4)
= 54 m²
Area of the ceiling = l * b
= 5 * 4
= 20 cm²
Total area of the four walls and the ceiling of the room :
= 54 + 20
= 74 cm²
Also Given,
Cost of white washing = 7.50 per m²
Then,
Total cost of white washing = 74 * 7.50 = 555
Therefore,
Cost of white washing its four walls = 555
Hope it helps!
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