The tile has the shape of a square with a side of 15 cm. How many tiles are needed to cover a wall with an area of 4.5 m2.

univerkov | February 10, 2021 | education

Initial data: l (tile side length, square) = 15 cm (0.15 m); S (area of the wall to be tiled) = 4.5 m2.

1) The area of one tile: S1 = l ^ 2 = 0.15 ^ 2 = 0.0225 m2.

2) The number of tiles to cover the wall: N = S / S1 = 4.5 / 0.0225 = 200 tiles.

Answer: To cover the wall, you need 200 tiles.

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