A room is 45 m x 15 m. What is the least number of rectangle tiles required to pave the floor of the room, if each tile is 50 cm x 1m?

1350 tiles

45 * 30 = 1,350 tiles

To find the least number of rectangle tiles required to pave the floor of the room, we need to determine how many tiles fit into the room both widthwise and lengthwise.

1. Convert the dimensions of the room into centimeters:
Length of the room = 45 m * 100 cm/m = 4500 cm
Width of the room = 15 m * 100 cm/m = 1500 cm

2. Calculate the area of each tile:
Length of the tile = 50 cm
Width of the tile = 100 cm

Area of each tile = Length * Width = 50 cm * 100 cm = 5000 cm^2

3. Calculate the total area of the room:
Total area = Length of the room * Width of the room = 4500 cm * 1500 cm = 6,750,000 cm^2

4. Divide the total area of the room by the area of each tile to find the number of tiles needed:
Number of tiles = Total area / Area of each tile = 6,750,000 cm^2 / 5000 cm^2 = 1350 tiles

Therefore, the least number of rectangle tiles required to pave the floor of the room is 1350 tiles.

To find the least number of rectangle tiles required to pave the floor of the room, you need to divide the area of the room by the area of a single tile.

First, let's convert the dimensions of the room and the tile to the same unit. The room is currently measured in meters, and the tile is measured in centimeters and meters.

The dimensions of the room are:
Length = 45 m
Width = 15 m

The dimensions of the tile are:
Length = 50 cm = 0.5 m
Width = 1 m

To calculate the area of the room, multiply the length by the width:
Area of the room = Length x Width = 45 m x 15 m

To calculate the area of a single tile, multiply the length by the width:
Area of a single tile = Length x Width = 0.5 m x 1 m

Now, divide the area of the room by the area of a single tile to find the number of tiles needed:
Number of tiles = Area of the room / Area of a single tile

Therefore, the least number of rectangle tiles required to pave the floor of the room is the result of this division.