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Sagot :
transformamos las unidades de litros a centimetros cubicos, esto es:
1 L = 1000 cm3
2L = 2000 cm3
hallamos el area de la base
[tex]A=L^2=8^2=64cm^2[/tex][tex]\begin{gathered} V=A\times h \\ 2000=64\times h \\ \frac{2000}{64}=\frac{64h}{64} \\ h=31.25 \end{gathered}[/tex]hallamos el area lateral
[tex]Alateral=P\times h=(4\times8)\times31.25=32\times31.25=1000cm^2[/tex]luego el area total
[tex]\text{Atotal}=2Abase+Alateral=2(64)+1000=128+1000=1128\operatorname{cm}[/tex]respuesta: se necesitan 1128 cm2 de carton
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