[tex]\Large\boxed{\begin{array}{l}\rm O\,cubo\,possui\,12~arestas.\\\rm representando\,x\,a\,aresta\,desse\,cubo\,teremos:\\\rm 12x=72\\\rm x=\dfrac{72}{12}\\\\\rm x=6~cm.\\\rm o\,volume~de\,qualquer~prisma\,\acute e\\\rm \acute area\,da\,base\,vezes\,altura.\\\rm como~todas\,as\,dimens\tilde oes\,s\tilde ao\,iguais\\\rm na\,pr\acute atica\,eleva-se\,a\,aresta\\\rm ao\,cubo.\\\rm portanto\\\sf V=x^3\\\rm V=6^3\\\rm V=216~cm^3\checkmark\end{array}}[/tex]
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[tex]\Large\boxed{\begin{array}{l}\rm O\,cubo\,possui\,12~arestas.\\\rm representando\,x\,a\,aresta\,desse\,cubo\,teremos:\\\rm 12x=72\\\rm x=\dfrac{72}{12}\\\\\rm x=6~cm.\\\rm o\,volume~de\,qualquer~prisma\,\acute e\\\rm \acute area\,da\,base\,vezes\,altura.\\\rm como~todas\,as\,dimens\tilde oes\,s\tilde ao\,iguais\\\rm na\,pr\acute atica\,eleva-se\,a\,aresta\\\rm ao\,cubo.\\\rm portanto\\\sf V=x^3\\\rm V=6^3\\\rm V=216~cm^3\checkmark\end{array}}[/tex]