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Answer:</h2>
The number of boxes we need to buy are: 11
<h2>
Step-by-step explanation:</h2>
It is given that:
You are preparing to tile the floor of a rectangular room that is 15 feet by 18 feet in size.
i.e. Area of floor=15×18=270 square feet.
The tiles you plan to use are square, measuring 12 inches on each side.
We know that 1 feet=12 inches.
Hence, square tile has a length measuring: 1 feet
Also, area of 1 square tile= 1²=1 square feet.
Hence, number of tiles required is the ratio of the area of floor to area of 1 tile.
i.e.
Number of tiles required= (270)/1= 270 tiles.
( since the area of a square of side length l feet is given by: l² square feet )
Now, it is given that:
Each box contain tiles that cover 25 square feet.
This means that the number of tiles which cover 25 square feet= 25 tiles.
Hence, number of tiles in one box=25
Hence, total number of bags required= 270/25=10.8
which is approximately 11 boxes.
