The floor of a rectangular Hall is of lenght 9m and weight 4m hw many tiles of 2cm by cm can be used to cover the floor completely
First, we need to convert the measurements to the same units. We can convert meters to centimeters by multiplying by 100:
Length = 9m x 100cm/m = 900cm
Width = 4m x 100cm/m = 400cm
Next, we need to calculate the total area of the floor in square centimeters:
Area = Length x Width = 900cm x 400cm = 360000cm^2
Finally, we can calculate how many tiles of 2cm x 2cm we will need to cover the entire floor by dividing the total area by the area of each tile:
Number of tiles = Area of floor / Area of each tile
Number of tiles = 360000cm^2 / 4cm^2
Number of tiles = 90000
Therefore, we will need 90,000 tiles of 2cm x 2cm to cover the entire floor.