A rectangular floor measures 7,2 m by 4,8 m. It is covered with square tiles with sides of 0,6 m. How many tiles are needed (no waste)?
Answer and explanation
Correct answer: D. 96
- Step 1: Floor area = 7,2 × 4,8 = 34,56 m²; one tile has an area of 0,6² = 0,36 m².
- Step 2: Number of tiles = 34,56 ÷ 0,36 = 96.
Answer
96.
Why not the others: 35: the number of square metres was used as the number of tiles. 40: the perimeter was used instead of the area. 58: the tile side was used instead of the tile area.
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