If I need 30×30 tile.and my room is 12×1 1ft how many pieces of tiles will I need

30 what? cm? in? m?

12x1 what? feet? yards? meters?

To determine the number of tiles you will need, you first need to calculate the area of your room and the area of each tile.

1. Calculate the area of your room:
Area of the room = Length × Width
Area of the room = 12 ft × 11 ft = 132 sq ft

2. Calculate the area of each tile:
Area of each tile = Length × Width
Area of each tile = 30 in × 30 in = 900 sq in

However, since the area of your room is in square feet and the area of the tile is in square inches, you have to convert the measurements to the same unit.

1 ft = 12 in (since there are 12 inches in a foot)

3. Convert the area of your room to square inches:
Area of the room = 132 sq ft × 144 sq in/sq ft (conversion factor)
Area of the room = 19,008 sq in

Now that both the room area and tile area are in square inches, you can find out how many tiles you will need.

4. Divide the area of the room by the area of each tile:
Number of tiles = Area of the room / Area of each tile
Number of tiles = 19,008 sq in / 900 sq in
Number of tiles = 21.12

Since you cannot purchase a fraction of a tile, you would need to round up. Therefore, you will need at least 22 pieces of 30x30 tiles to cover your room.

To calculate the number of tiles you will need, you can follow these steps:

Step 1: Calculate the area of the room
To find the area of the room, multiply the length by the width:
Area = length × width

Area = 12 ft × 11 ft
Area = 132 square ft

Step 2: Calculate the area of a single tile
Since your tiles are 30×30, the area of each tile can be calculated by multiplying the length by the width:
Tile Area = length × width

Tile Area = 30 cm × 30 cm
Tile Area = 900 square cm

Step 3: Convert the area of the room to the same unit as the tile area
Since the areas are in different units, you need to convert them to the same unit for calculation. Let's use square feet for both:

132 square ft = 132 × 12 × 12 square inches (1 square ft = 12 × 12 square inches)
132 square ft = 19008 square inches

Step 4: Calculate the number of tiles needed
Now, divide the area of the room by the area of each tile to determine the number of tiles needed:
Number of Tiles = Area of the room / Area of a single tile

Number of Tiles = 19008 square inches / 900 square inches
Number of Tiles ≈ 21.12

Since you cannot have fractional tiles, round up to the nearest whole number:
Number of Tiles = 22

Therefore, you will need 22 tiles to cover your 12×11 ft room using 30×30 cm tiles.