Cabinet painting

The cabinet for storing garden tools is shaped like a cube with an edge length of 2 m. How many m² of paint will we need to paint this cabinet if we paint everything except the bottom base? How much will it cost to paint a cabinet if one can of paint for 63 CZK is enough to paint 3 m²?

Final Answer:

S =  20 m²
p =  420 Kc

Step-by-step explanation:

$$\begin{gathered} a=2\text{m} \\ S=5\cdot a^2=5\cdot 2^2{\text{m}}^2=20{\text{m}}^2 \end{gathered}$$

$$\begin{gathered} S_1=3{\text{m}}^2 \\ p=63\cdot \frac{S}{S_1}=63\cdot \frac{20}{3}=\frac{63\cdot 20}{3}=\frac{1260}{3}=420\text{Kc} \end{gathered}$$

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