Matemática, perguntado por emillysamuelpapbyr2m, 4 meses atrás

Se um cubo tem 40 cm de aresta então calcule:
a) A área de base.
b) A área lateral.
c) A área total. d) O volume.
e) A diagonal da base
. f) A diagonal do cubo.​

Soluções para a tarefa

Respondido por CyberKirito
0

\Large\boxed{\begin{array}{l}\underline{\sf \acute Area\,da\,base\,do\,cubo}\\\rm A_b=\ell^2\\\underline{\sf \acute Area\,lateral\,do\,cubo}\\\rm A_{l}=4\cdot\ell^2\\\underline{\sf\acute Area\,total\,do\,cubo}\\\rm A_{t}=6\cdot \ell^2\\\underline{\sf Volume\,do\,cubo}\\\rm V=\ell^3\\\underline{\sf Diagonal\,da\,base\,do\,cubo}\\\rm d_{b}=\ell\sqrt{2}\\\underline{\sf Diagonal\,do\,cubo}\\\rm D=\ell\sqrt{3}\end{array}}

\large\boxed{\begin{array}{l}\tt dados: \ell=40\,cm\\\sf a)~\rm A_b=\ell^2\\\rm A_b=40^2\\\rm A_b=1600\,cm^2\\\sf b)~\rm A_l=4\cdot \ell^2\\\rm A_l=4\cdot40^2\\\rm A_l=4\cdot1600\\\rm A_l=6400\,cm^2\\\sf c)~\rm A_t=6\cdot \ell^2\\\rm A_t=6\cdot1600\\\rm A_t=9600\,cm^2\\\sf d)~\rm V= \ell^3\\\rm V=40^3\\\rm V=64000\,cm^3\\\sf e )~\rm d_b=\ell\sqrt{2}\\\rm d_b=40\sqrt{2}\,cm\\\sf f)~\rm D=\ell\sqrt{3}\\\rm D=40\sqrt{3}\,cm\end{array}}

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