Question

How many 4-inch square tiles are needed to cover a wall that measures 6 feet by 8 feet?

Answer 1

We have a wall of 6 feet by 8 feet and we want to know how many 4-inch square tiles we need to cover the wall.

Note that 1 feet = 12 inch, so the tiles are:

`4inch\frac{1\text{ f}eet}{12\text{ inch}}=(1)/(3)feet`

So, the tiles are 1/3 feet square.

Now we have to find how many tiles we need to cover 8 feet:

`\text{number of tiles = }(8feet)/((1)/(3)feet)=3\cdot8=24`

So, we need 24 tiles to cover the 8 feet.

And for the 6 feet we need:

`\text{number of tiles = }(6feet)/((1)/(3)feet)=6\cdot3=18`

So, we need 18 tiles to cover the 6 feet.

Finally, to cover all the wall of 8 feet by 6 feet we need 24 by 18 tiles=432 tiles