Answer:

see the attached figure : given,

length of the big square = 100 m

length of the small square = 5 m

Side of the smaller square = Side of the bigger square - 2(width of the path)

= 100 - 2(5)

= 90 m

Area of the path = (100)² - (90)² = 10000 -

8100 = 1900 sq m

Cost of Cementing at rs 250= 250×1900

= 4,75,000 rs