Playstation

Anton wants to cover the cover for the game on the Playstation with the original paper. The cover is shaped like a block measuring 13 cm × 17 cm × 15 cm. Anton bought 0.35 m² of silver paper. Will the paper be enough to cover the cover? (1 = Yes, 0 = No)

Correct answer:

x =  1

Step-by-step explanation:

$$\begin{gathered} a=13\text{cm}\to \text{m}=13:100\text{m}=0.13\text{m} \\ b=17\text{cm}\to \text{m}=17:100\text{m}=0.17\text{m} \\ c=15\text{cm}\to \text{m}=15:100\text{m}=0.15\text{m} \\ {S}_1=0.35{\text{m}}^2 \\ S=2\cdot (a\cdot b+b\cdot c+a\cdot c)=2\cdot (0.13\cdot 0.17+0.17\cdot 0.15+0.13\cdot 0.15)=\frac{671}{5000}=0.1342{\text{m}}^2 \\ S<S_1 \\ x=1 \end{gathered}$$

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