the length, breath and hight of a room are 5m, 4m ,3 m respectively. find the cost of whitewashing the wall of the room and the ceiling rate of
Rs 7.50 per m² ?????
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Answer:
The cost of white washing the wall of the room and the ceiling is Rs 555
Explanation:
Length, breadth and height of a room are 5 m, 4 m and 3 m.
Area of four walls of the room =2h(l+b)
=2×3(5+4)
=6(9)
=54 m²
Area of the ceiling =l×b
=5×4
=20 m².
Total area of the four walls and the ceiling of the room
=54+20
=74 m²
Cost of white washing = Rs 7.50 per m²
Total cost of white washing =74×7.50= Rs 555
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