Question

a rectangular field is of 25 metre long and 21 metre wide a 2.5 metre wide strip is level all around it at the rate of rupees 5 per square metre find the cost of levelling the strip

Answer 1

Answer:

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Step-by-step explanation:

Here we need to get the area covered by the strip.

To get this we should understand that we have two rectangles.

One surrounding the other at a distance of 2.5 m.

The dimensions of the bigger triangle is given by :

Length = 2.5 + 2.5 + 25 = 30m

The width = 2.5 + 2.5 + 21 = 26m

The area of the inner rectangle is :

21 × 25 = 525 m^2

The area of the outer rectangle is :

30 × 26 = 780 m^2

The area of the strip is :

780 - 525 = 255

The cost of levelling the strip is :

Rs 5 per square meters.

The total cost will be :

5 × 255 = Rs 1275

Answer 2

Answer:

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