Question

Arun is 4.5 M long and 4 metre wide the floor of the room is to be covered with tiles of Size 15 CM by 10 cm find the cost of covering the floor with tiles at the rate of ₹ 4.50 per tile

Answer 1

Arun = a room (i hope so)

The area of the room = 18m^2 = 180000cm^2
The area of a tile = 150 cm^2
Number of tiles required is 180000/150 = 1200
Cost of 1 tile = ₹ 4.50 
Cost of 1200 tiles = ₹ 5400
 
The floor can be covered in ₹ 5400

Answer 2

Area of room =450*400=180000cmsq
Tile area =15*10=150cm
So total tiles req=180000/150=1200
Cost of total tiles=1200*4.5=5400 rs