7. A rectangular room is 9 m long and 6 m wide. Find the cost of covering the floor with carpet 2m at the rate of 35 per square metre.
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Step-by-step explanation:
- Area of rectangle is l×b ( 9m×6m= 54m^2) 54× 2m = 108m^2 . the cost of covering the floor= 108 × 35= ₹3780
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