A square tile has side 30 cm. How many of these tiles will cover a rectangular floor of length 7.2m and width 4.2m?

To find the number of square tiles required to cover the rectangular floor, we need to find out how many tiles can fit into the floor without overlapping. We can start by finding the area of the rectangular floor: Area = Length x Width Area = 7.2m x 4.2m Area = 30.24 square meters Next, we need to find the area of one square tile: Area of tile = Side x Side Area of tile = 30cm x 30cm Area of tile = 900 square centimeters (We need to convert this to square meters to match the area of the floor) Area of tile = 0.09 square meters Now, we can divide the total area of the floor by the area of one tile to get the number of tiles required: Number of tiles = Total area / Area of one tile Number of tiles = 30.24 square meters / 0.09 square meters Number of tiles = 336 Therefore, we need 336 square tiles to cover the rectangular floor. is the correct answer.