Question

The floor of a rectangular room will be tiled with square tiles that measure 3 inches on each side. The room is 109 inches long and 103 inches wide. How many tiles, including parts of tiles, are needed to complete the job? Question 3 options:

Answer 1

Find the total area of the room
109 * 103 = 11227 inches^2
the tile takes up 3*3 = 9 inches^2
11227/9 = 1247.4
You need 1247 tiles and 0.4 of a tile.
Or you could just get 1248 and cut the last tile a bit :P

Hope this helps :)

Answer 2

You will need almost 1248 tiles (exactly 1247.44 tiles)

Explanation:

The formula for the area of the rectangular room and the square tile is the same:

`A=W*L`

We can calculate the number of tiles by dividing the area of the rectangular room and the area of a single tile:

Area of the rectangular room:

`A1=109*103\\\\A1=11227\\\\`

A1=11227 square inches

Area of the tile:

`A2=3*3\\\\A2=9\\\\`

So for the number of tiles:

number of tiles = A1/A2 = 11227/9

number of tiles = 1247.44