Glass

At the glass shop, we have to cut eight sheets of glass. Each was shaped as a square with sides of 18 cm. We paid 44 CZK. How much is 1 m² of glass?

Correct answer:

x =  169.75 Kc

Step-by-step explanation:

$$\begin{gathered} a=18\text{cm}\to \text{m}=18:100\text{m}=0.18\text{m} \\ {S}_1=a^2=0.18^2=\frac{81}{2500}=0.0324{\text{m}}^2 \\ S=8\cdot S_1=8\cdot 0.0324=\frac{162}{625}=0.2592{\text{m}}^2 \\ x=44/S=44/0.2592=169.75\text{Kc} \end{gathered}$$

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