18. Find the cost of carpeting a room 12m long and 9m wide at the rate of Rs. 85 per sq m.
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Answer:
Given:- length=12m , breadth= 9m
Area of the rectangle= (l×b)
=> (12×9)m²
=> 108m²
Cost of carpeting = (85×108)
=> Rs. 9,180
Step-by-step explanation:
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