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10. The walls and ceiling of a room are to be plastered. The length, breadth, and height of the room are 4.5 m,
3 m, and 350 cm respectively. Find the cost of plastering the room at the rate of 12 per m².
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Answer:
630
Step-by-step explanation:
area of four walls =2(length+breadth)*height
=2*(4.5+3)*3.5=52.5
cost of plastering =52.5*12=630
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