A floor is 12 m × 9 m. If tiles of 1.5 m × 1.5 m are used, how many tiles are needed?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 48.
Floor area = 12 × 9 = 108 m2
Tile area = 1.5 × 1.5 = 2.25 m2
Number of tiles = 108/2.25 = 48