Tiles

The rectangular floor of the 6 x 1.8 m dimensions is to be covered with 50 cm square tiles. How many tiles will be needed?

Correct answer:

n =  48

Step-by-step explanation:

$$\begin{gathered} a=6\text{ m } \\ b=1.8\text{ m } \\ x=50\text{ cm}\to \text{ m}=50\mathrm{/}100\text{ m}=0.5\text{ m } \\ {n}_1=a\mathrm{/}x=6\mathrm{/}0.5=12 \\ {n}_2=\lceil b\mathrm{/}x\rceil =\lceil 1.8\mathrm{/}0.5\rceil =4 \\ n=n_1\cdot n_2=12\cdot 4=48 \end{gathered}$$

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