Question

13. A rectangular room is 10 m long and 7.5 m wide. Find the cost of covering the
floor with carpet 1.25 m wide at 250 per metre​

Answer 1

Step-by-step explanation:

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

Answer 2

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Step-by-step explanation:

The cost of the carpet is Rs.15000.

Step-by-step explanation:

Given : A Rectangular room is 10 m long and 7.5 m wide.

To find : The cost of covering the floor with carpet 1.25m wide at rupees 250 per m.

Solution :

Length of the room= 10 m

Width of the room= 7.5 m

Area of the floor is

A=l\times bA=l×b

A=10\times 7.5A=10×7.5

A=75 m^2A=75m

2

Width of the carpet= 1.25 m

Now, Area of the carpet= Area of the floor

75 m^2=L\times1.2575m

2

=L×1.25

L=\frac{75}{1.25}L=

1.25

75

L=60L=60

So, Length of the carpet is 60 meter.

Rate is Rs.250/m

Cost of covering the floor is

C=250\times 60C=250×60

C=15000C=15000

Therefore, The cost of the carpet is Rs.15000.