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Let the width of the rectangle = x cm Then, 175% of x = 63 x = 63 × 100/175 = 36 cm Perimeter of the rectangle = 2(length + width) = 2 × (63 + 36) = 198 cm Perimeter of the square = (198 + 36) = 204 cm The sides of the square = 204/4 = 51 cm The area of the square field without street = (51)2 sq. cm = 2601 sq. cm The area of the square field with street = (51 + 20)2 sq. cm = 5041 sq. cm The area of the street = 5041 – 2601 = 2440 sq. cm The total cost of constructing the street = 2440 × 22 = Rs. 53,680
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