Block-shaped 13531

The sheet of wrapping paper measures 100cm and 70cm. Is it enough to wrap a gift in a block-shaped box with dimensions of 40 cm, 25 cm, and 20 cm?

Result

x=

Yes

No

Step-by-step explanation:

$$\begin{gathered} S_1=100\cdot 70=7000{\text{cm}}^2 \\ a=40\text{cm} \\ b=25\text{cm} \\ c=20\text{cm} \\ {S}_2=2\cdot (a\cdot b+b\cdot c+c\cdot a)=2\cdot (40\cdot 25+25\cdot 20+20\cdot 40)=4600{\text{cm}}^2 \\ {S}_1>S_2 \\ x=1 \end{gathered}$$

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