Parallogram

Parallogram base is 24 cm and high 10 cm. How many such tile are required to cover a floor of area 1080m²?

Correct answer:

n =  45000

Step-by-step explanation:

$$\begin{gathered} a=24\text{ cm } \\ b=10\text{ cm } \\ S=1080{\text{m}}^2\to {\text{cm}}^2=1080\cdot 10000{\text{cm}}^2=10800000{\text{cm}}^2 \\ {S}_1=a\cdot b=24\cdot 10=240{\text{cm}}^2 \\ n=S\mathrm{/}{S}_1=10800000\mathrm{/}240=45000 \end{gathered}$$

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