Mr. Smith uses 400 square tiles to cover the floor of a bedroom. The bedroom has an

area of 25 square metres. What are the dimensions of a square tile in centimetres?

1 answer

First, we need to convert the area of the bedroom from square metres to square centimetres, so we multiply by 10,000:

25 square metres = 25,000 square centimetres

Now, we can find the size of each tile by dividing the total area by the number of tiles:

25,000 / 400 = 62.5

So each tile has an area of 62.5 square centimetres. Since a square has equal sides, we can find the length of one side by taking the square root of the area:

√62.5 = 7.91 (rounded to two decimal places)

Therefore, each tile is a square with sides of 7.91 centimetres.