A rectangle field is of 25m long and 21 m wide.A 2.5 m wide strip is levelled all around it at the rate of rupees 5 per square meter.Find the cost of levelling the strip
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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
..
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
..
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