Question

. Amandeep wanted to cover one wall of his room with square tiles having each side 25 cm long.
The length and breadth of the wall is 20 m and 15 m respectively. Calculate the number of tiles
used to cover the wall.​

Answer 1

Length of wall = 20 m = 2000 cm

Breadth of wall = 15 m = 1500 cm

Area of wall (rectangle) = L × B

                                       = 2000 × 1500

                                       = 3000000 cm²

Side of tile = 25 cm

Area of tile (square) = s × s

                                 = 25 × 25

                                 = 625 cm²

Therefore, tiles required = $\frac{Area of wall}{Area of a tile}$

                                         = $\frac{3000000}{625}$

                                         = 4800 tiles

∴ 4800 tiles are required.

Please mark my answer the brainliest.