Question

Find the cost of flooring a square room of side 10m with marble tiles 25cmx20cm at the rate of rupees 7.50 per tile.

Answer 1

side of room = 10m = 1000cm

area of floor = 1000²
= 1000000cm²
area of tile = 25×20
=500²
no.of tiles = 1000000/500
=200 tiles
cost = 200×7.50
=Rs. 1500