10. A rectangular room is 10 m long and 6 m wide. Find the cost of covering the floor
wide at the rate of 42 per metre.
m with square files of side 30 cm at the
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Answer:
length of room = 10m
breadth of room = 7.5m
Area of floor =10×7.5=75m
2
width of carpet = 1.25m
Now, Area of floor = Area of carpet
10×7.5=1.25× length of carpet
length of carpet =
1.25
10×7.5
=60m
Cost per meter = 250Rs
Total cost = Length of carpet × cost per meter
=60×250
=Rs 15000
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