A shop sells floor tiles at Rs 48 per square meter. A contractor employs a machine that polishes the tiles that damages 10% of the total number of tiles which cannot be used any more. Calculate the amount that needs to be paid by contractor to tile shop owner, if the hall is of a square shape and has a perimeter of 400 meters?

Explanation:-

Let the side of the square shaped hall be X meter.
Then,
Perimeter = 4X
4X = 400
X = 100 m
Area of the hall = 100*100 = 10000 sq. meter.
Now,
The cost on total tiles = 10000*48 = Rs. 480000
But, 10% damage has occurred on tiles which will also be included in cost i.e Total cost = 480000 + 10% of 480000 = 480000 + 48000
= Rs. 5, 28, 000 .