Floor of a square room of side 10 meter is to be completely covered wi...
Calculating the number of tiles needed:
To calculate the number of tiles needed to cover the floor of the square room, we first need to determine the area of the room and the area of each tile.
Area of the room:
The area of a square room can be calculated by multiplying the side length by itself. In this case, the side length of the room is 10 meters, so the area of the room is 10 * 10 = 100 square meters.
Area of each tile:
Since each tile is a square with a side length of 50 centimeters (or 0.5 meters), the area of each tile can be calculated by multiplying the side length by itself. Therefore, the area of each tile is 0.5 * 0.5 = 0.25 square meters.
Calculating the number of tiles:
To find the number of tiles needed to cover the floor of the room, we divide the area of the room by the area of each tile.
100 square meters / 0.25 square meters = 400 tiles
Therefore, the smallest number of tiles needed to completely cover the floor of the square room is 400 tiles, which corresponds to option 'C'.