Question

The floor of a room is 3 m and 4 m long. I qm going yo tile the floor with tiles that are 20 cm wide and 50 cm long. How many tiles do I need to buy?

Answer 1

To find the number of tiles needed, we need to calculate the area of the floor and divide it by the area of each tile.

First, let's convert the dimensions of the floor to centimeters:
Length = 3 m = 3 * 100 cm = 300 cm
Width = 4 m = 4 * 100 cm = 400 cm

Next, let's calculate the area of the floor:
Area = Length * Width
Area = 300 cm * 400 cm
Area = 120000 cm^2

Now, let's calculate the area of each tile:
Length of tile = 50 cm
Width of tile = 20 cm
Area of tile = Length of tile * Width of tile
Area of tile = 50 cm * 20 cm
Area of tile = 1000 cm^2

Finally, let's divide the area of the floor by the area of each tile to find the number of tiles needed:
Number of tiles = Area of floor / Area of tile
Number of tiles = 120000 cm^2 / 1000 cm^2
Number of tiles = 120

Therefore, you need to buy 120 tiles.