Question

A rectangular grassy plot is 45m long and 30m broad. it has a gravel path 2.5m wide all around it along side. find the area of the path and cost of constructing it at ₹3.50 par square metre.​

Answer 1

The diagram is in the attachment ⤴️

Here,

PQ= AB- 2.5+2.5

PQ= 45-5= 40 m.

QR= BC-2.5+2.5

QR= 30-5=25 m

Area of the gravel path= Area of ABCD-Area of PQRS

Area of ABCD

Area = l×b

= 45×30

= 1350 m²

Area of PQRS

Area = l×b

= 40×25

= 1000 m²

Area of the gravel path= Area of ABCD-Area of PQRS

Area of the gravel path= 1350-1000

Area of the gravel path= 350 m²

Now,

1 m² costs= ₹3.50

350 m² costs= ₹3.50

Actual costs= 350×3.50

= ₹1225

So, the cost of constructing is ₹1225.

Step-by-step explanation:

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Answer 2

Answer:

The diagram is in the attachment ⤴️

Here,

PQ= AB- 2.5+2.5

PQ= 45-5= 40 m.

QR= BC-2.5+2.5

QR= 30-5=25 m

Area of the gravel path= Area of ABCD-Area of PQRS

Area of ABCD

Area = l×b

= 45×30

= 1350 m²

Area of PQRS

Area = l×b

= 40×25

= 1000 m²

Area of the gravel path= Area of ABCD-Area of PQRS

Area of the gravel path= 1350-1000

Area of the gravel path= 350 m²

Now,

1 m² costs= ₹3.50

350 m² costs= ₹3.50

Actual costs= 350×3.50

= ₹1225

So, the cost of constructing is ₹1225.

Step-by-step explanation:

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